Stderr output

<core_client_version>8.0.2</core_client_version>
<![CDATA[
<message>
Fonction incorrecte.
 (0x1) - exit code 1 (0x1)</message>
<stderr_txt>
2025-01-22 08:26:50 (39732): vboxwrapper version 26208
2025-01-22 08:26:50 (39732): BOINC client version: 8.0.2
2025-01-22 08:26:51 (39732): Detected: VirtualBox VboxManage Interface (Version: 7.1.2)
2025-01-22 08:26:51 (39732): Detected: Heartbeat check (file: 'heartbeat' every 1200.000000 seconds)
2025-01-22 08:26:51 (39732): Successfully copied 'init_data.xml' to the shared directory.
2025-01-22 08:26:51 (39732): Successfully copied 'input' to the shared directory.
2025-01-22 08:26:52 (39732): Create VM. (boinc_c44991dcf39ff0bd, slot#12)
2025-01-22 08:26:52 (39732): Setting Memory Size for VM. (630MB)
2025-01-22 08:26:52 (39732): Setting CPU Count for VM. (1)
2025-01-22 08:26:53 (39732): Setting Chipset Options for VM.
2025-01-22 08:26:53 (39732): Setting Graphics Controller Options for VM.
2025-01-22 08:26:53 (39732): Setting Boot Options for VM.
2025-01-22 08:26:53 (39732): Setting Network Configuration for NAT.
2025-01-22 08:26:54 (39732): Enabling VM Network Access.
2025-01-22 08:26:54 (39732): Disabling USB Support for VM.
2025-01-22 08:26:54 (39732): Disabling COM Port Support for VM.
2025-01-22 08:26:54 (39732): Disabling LPT Port Support for VM.
2025-01-22 08:26:55 (39732): Disabling Audio Support for VM.
2025-01-22 08:26:55 (39732): Disabling Clipboard Support for VM.
2025-01-22 08:26:55 (39732): Disabling Drag and Drop Support for VM.
2025-01-22 08:26:56 (39732): Adding storage controller(s) to VM.
2025-01-22 08:26:56 (39732): Adding virtual disk drive to VM. (Theory_2025_01_16_prod.vdi)
2025-01-22 08:26:58 (39732): Adding VirtualBox Guest Additions to VM.
2025-01-22 08:26:58 (39732): Adding network bandwidth throttle group to VM. (Defaulting to 1024GB)
2025-01-22 08:26:58 (39732): forwarding host port 65078 to guest port 80
2025-01-22 08:26:59 (39732): Enabling remote desktop for VM.
2025-01-22 08:26:59 (39732): Required extension pack not installed, remote desktop not enabled.
2025-01-22 08:26:59 (39732): Enabling shared directory for VM.
2025-01-22 08:27:00 (39732): Starting VM using VBoxManage interface. (boinc_c44991dcf39ff0bd, slot#12)
2025-01-22 08:27:00 (39732): Error in start VM for VM: 1
Command:
VBoxManage -q startvm "boinc_c44991dcf39ff0bd" --type headless
Output:
VBoxManage.exe: error: The virtual machine 'boinc_c44991dcf39ff0bd' has terminated unexpectedly during startup with exit code 1 (0x1).  More details may be available in 'E:\BOINC\slots\12\boinc_c44991dcf39ff0bd\Logs\VBoxHardening.log'
VBoxManage.exe: error: Details: code E_FAIL (0x80004005), component MachineWrap, interface IMachine
Waiting for VM "boinc_c44991dcf39ff0bd" to power on...

2025-01-22 08:27:00 (39732): VM failed to start.
2025-01-22 08:27:00 (39732): Could not start 
2025-01-22 08:27:00 (39732): ERROR: VM failed to start
2025-01-22 08:27:00 (39732): Powering off VM.
2025-01-22 08:27:00 (39732): Deregistering VM. (boinc_c44991dcf39ff0bd, slot#12)
2025-01-22 08:27:00 (39732): Removing network bandwidth throttle group from VM.
2025-01-22 08:27:00 (39732): Removing VM from VirtualBox.

    Hypervisor System Log:

00:00:07.617794          Platform architecture set to 'x86'
00:00:07.618873          Saving settings file "E:\BOINC\slots\12\boinc_c44991dcf39ff0bd\boinc_c44991dcf39ff0bd.vbox" with version "1.19-windows"
00:00:07.620726          Finished saving settings file "E:\BOINC\slots\12\boinc_c44991dcf39ff0bd\boinc_c44991dcf39ff0bd.vbox"
00:00:07.884286          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={e36a5081-a82a-40bd-9e4e-42a44d6ce50f} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:07.884305          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={e36a5081-a82a-40bd-9e4e-42a44d6ce50f} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:07.885141          Platform architecture set to 'x86'
00:00:07.886337          Saving settings file "E:\BOINC\slots\12\boinc_c44991dcf39ff0bd\boinc_c44991dcf39ff0bd.vbox" with version "1.19-windows"
00:00:07.891214          Finished saving settings file "E:\BOINC\slots\12\boinc_c44991dcf39ff0bd\boinc_c44991dcf39ff0bd.vbox"
00:00:08.417410          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={e36a5081-a82a-40bd-9e4e-42a44d6ce50f} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:08.417430          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={e36a5081-a82a-40bd-9e4e-42a44d6ce50f} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:08.418049          Platform architecture set to 'x86'
00:00:08.418683          Saving settings file "E:\BOINC\slots\12\boinc_c44991dcf39ff0bd\boinc_c44991dcf39ff0bd.vbox" with version "1.19-windows"
00:00:08.423088          Finished saving settings file "E:\BOINC\slots\12\boinc_c44991dcf39ff0bd\boinc_c44991dcf39ff0bd.vbox"
00:00:08.685328          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={e36a5081-a82a-40bd-9e4e-42a44d6ce50f} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:08.685347          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={e36a5081-a82a-40bd-9e4e-42a44d6ce50f} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:08.686061          Platform architecture set to 'x86'
00:00:08.687170          ERROR [COM]: aRC=VBOX_E_OBJECT_NOT_FOUND (0x80bb0001) aIID={d644ad1e-c501-4fc7-9ab6-aa6d763bc540} aComponent={VirtualBoxWrap} aText={&#197;&#131;o extension pack providing a cryptographic support module could be found}, preserve=false aResultDetail=0
00:00:08.690408          ERROR [COM]: aRC=VBOX_E_OBJECT_NOT_FOUND (0x80bb0001) aIID={e36a5081-a82a-40bd-9e4e-42a44d6ce50f} aComponent={SessionMachine} aText={No storage device attached to device slot 0 on port 2 of controller 'Hard Disk Controller'}, preserve=false aResultDetail=0
00:00:08.690447          ERROR [COM]: aRC=VBOX_E_OBJECT_NOT_FOUND (0x80bb0001) aIID={e36a5081-a82a-40bd-9e4e-42a44d6ce50f} aComponent={SessionMachine} aText={No storage device attached to device slot 0 on port 2 of controller 'Hard Disk Controller'}, preserve=false aResultDetail=0
00:00:08.693681          ERROR [COM]: aRC=E_FAIL (0x80004005) aIID={bea3ef5c-de2f-4b74-aa3a-15d6249371a0} aComponent={RecordingSettingsWrap} aText={Recording not started}, preserve=false aResultDetail=0
00:00:08.694184          ERROR [COM]: aRC=E_FAIL (0x80004005) aIID={e36a5081-a82a-40bd-9e4e-42a44d6ce50f} aComponent={SessionMachine} aText={This machine does not have any snapshots}, preserve=false aResultDetail=0
00:00:08.953146          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={e36a5081-a82a-40bd-9e4e-42a44d6ce50f} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:08.953193          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={e36a5081-a82a-40bd-9e4e-42a44d6ce50f} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:08.957145          Launched VM: 1671200624 pid: 36764 (0x8f9c) frontend: headless name: boinc_c44991dcf39ff0bd
00:00:09.357529 Watcher  ERROR [COM]: aRC=E_FAIL (0x80004005) aIID={e36a5081-a82a-40bd-9e4e-42a44d6ce50f} aComponent={MachineWrap} aText={The virtual machine 'boinc_c44991dcf39ff0bd' has terminated unexpectedly during startup with exit code 1 (0x1).  More details may be available in 'E:\BOINC\slots\12\boinc_c44991dcf39ff0bd\Logs\VBoxHardening.log'}, preserve=false aResultDetail=0
00:00:09.357860 Watcher  Reaper: Pid 36764 (0x8f9c) exited normally: 1 (0x1)
00:00:09.390638          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={e36a5081-a82a-40bd-9e4e-42a44d6ce50f} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:09.390688          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={e36a5081-a82a-40bd-9e4e-42a44d6ce50f} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:09.391396          Platform architecture set to 'x86'
00:00:09.391889          ERROR [COM]: aRC=E_FAIL (0x80004005) aIID={e36a5081-a82a-40bd-9e4e-42a44d6ce50f} aComponent={SessionMachine} aText={This machine does not have any snapshots}, preserve=false aResultDetail=0
00:00:09.418491          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={e36a5081-a82a-40bd-9e4e-42a44d6ce50f} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:09.418510          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={e36a5081-a82a-40bd-9e4e-42a44d6ce50f} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:09.419086          Platform architecture set to 'x86'
00:00:09.419839          Saving settings file "E:\BOINC\slots\12\boinc_c44991dcf39ff0bd\boinc_c44991dcf39ff0bd.vbox" with version "1.19-windows"
00:00:09.424719          Finished saving settings file "E:\BOINC\slots\12\boinc_c44991dcf39ff0bd\boinc_c44991dcf39ff0bd.vbox"
00:00:09.677481          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={e36a5081-a82a-40bd-9e4e-42a44d6ce50f} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:09.677499          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={e36a5081-a82a-40bd-9e4e-42a44d6ce50f} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:09.677658          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={e36a5081-a82a-40bd-9e4e-42a44d6ce50f} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:09.677666          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={e36a5081-a82a-40bd-9e4e-42a44d6ce50f} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:09.677707          Saving settings file "C:\Users\JGV10\.VirtualBox\VirtualBox.xml" with version "1.12-windows"
00:00:09.683185          Finished saving settings file "C:\Users\JGV10\.VirtualBox\VirtualBox.xml"
00:00:09.683242          Saving settings file "C:\Users\JGV10\.VirtualBox\VirtualBox.xml" with version "1.12-windows"
00:00:09.690411          Finished saving settings file "C:\Users\JGV10\.VirtualBox\VirtualBox.xml"
00:00:09.691012 DeleteVM Saving settings file "C:\Users\JGV10\.VirtualBox\VirtualBox.xml" with version "1.12-windows"
00:00:09.697060 DeleteVM Finished saving settings file "C:\Users\JGV10\.VirtualBox\VirtualBox.xml"
00:00:14.701850 main     VirtualBox: object deletion starts
00:00:14.702728 main     HostDnsMonitor: shutting down ...
00:00:14.702758 main     HostDnsMonitor: shut down
00:00:14.703749 Watcher  ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={d644ad1e-c501-4fc7-9ab6-aa6d763bc540} aComponent={VirtualBoxWrap} aText={The object is not ready}, preserve=false aResultDetail=0
00:00:14.704038 main     VirtualBox: object deleted

    VM Execution Log:


    VM Startup Log:


    VM Trace Log:

BoxWrap, interface IVirtualBox, callee IUnknown
VBoxManage.exe: error: Context: "FindMachine(Bstr(VMNameOrUuid).raw(), machine.asOutParam())" at line 3212 of file VBoxManageInfo.cpp

2025-01-22 08:26:52 (39732): 
Command: VBoxManage -q createvm --name "boinc_c44991dcf39ff0bd" --basefolder "E:\BOINC\slots\12" --ostype "Linux26_64" --register
Exit Code: 0
Output:
Virtual machine 'boinc_c44991dcf39ff0bd' is created and registered.
UUID: 59e72eda-7299-4409-809f-a5c830b8bb7c
Settings file: 'E:\BOINC\slots\12\boinc_c44991dcf39ff0bd\boinc_c44991dcf39ff0bd.vbox'

2025-01-22 08:26:52 (39732): 
Command: VBoxManage -q modifyvm "boinc_c44991dcf39ff0bd" --description "Theory_2773-2958320-375_2" 
Exit Code: 0
Output:

2025-01-22 08:26:52 (39732): 
Command: VBoxManage -q modifyvm "boinc_c44991dcf39ff0bd" --memory 630 
Exit Code: 0
Output:

2025-01-22 08:26:53 (39732): 
Command: VBoxManage -q modifyvm "boinc_c44991dcf39ff0bd" --cpus 1 
Exit Code: 0
Output:

2025-01-22 08:26:53 (39732): 
Command: VBoxManage -q modifyvm "boinc_c44991dcf39ff0bd" --acpi on --ioapic on --rtcuseutc off 
Exit Code: 0
Output:

2025-01-22 08:26:53 (39732): 
Command: VBoxManage -q modifyvm "boinc_c44991dcf39ff0bd" --vram 16 --graphicscontroller VBoxVGA 
Exit Code: 0
Output:

2025-01-22 08:26:53 (39732): 
Command: VBoxManage -q modifyvm "boinc_c44991dcf39ff0bd" --boot1 disk --boot2 dvd --boot3 none --boot4 none 
Exit Code: 0
Output:

2025-01-22 08:26:54 (39732): 
Command: VBoxManage -q modifyvm "boinc_c44991dcf39ff0bd" --nic1 nat --natdnsproxy1 on --cableconnected1 off 
Exit Code: 0
Output:

2025-01-22 08:26:54 (39732): 
Command: VBoxManage -q modifyvm "boinc_c44991dcf39ff0bd" --cableconnected1 on 
Exit Code: 0
Output:

2025-01-22 08:26:54 (39732): 
Command: VBoxManage -q modifyvm "boinc_c44991dcf39ff0bd" --usb off 
Exit Code: 0
Output:

2025-01-22 08:26:54 (39732): 
Command: VBoxManage -q modifyvm "boinc_c44991dcf39ff0bd" --uart1 off --uart2 off 
Exit Code: 0
Output:

2025-01-22 08:26:55 (39732): 
Command: VBoxManage -q modifyvm "boinc_c44991dcf39ff0bd" --lpt1 off --lpt2 off 
Exit Code: 0
Output:

2025-01-22 08:26:55 (39732): 
Command: VBoxManage -q modifyvm "boinc_c44991dcf39ff0bd" --audio-enabled off 
Exit Code: 0
Output:

2025-01-22 08:26:55 (39732): 
Command: VBoxManage -q modifyvm "boinc_c44991dcf39ff0bd" --clipboard disabled 
Exit Code: 0
Output:

2025-01-22 08:26:56 (39732): 
Command: VBoxManage -q modifyvm "boinc_c44991dcf39ff0bd" --draganddrop disabled 
Exit Code: 0
Output:

2025-01-22 08:26:56 (39732): 
Command: VBoxManage -q storagectl "boinc_c44991dcf39ff0bd" --name "Hard Disk Controller" --add "sata" --controller "IntelAHCI" --hostiocache off --portcount 3
Exit Code: 0
Output:

2025-01-22 08:26:56 (39732): 
Command: VBoxManage -q showhdinfo "E:\BOINC/projects/lhcathome.cern.ch_lhcathome/Theory_2025_01_16_prod.vdi" 
Exit Code: 0
Output:
UUID:           6a4110e9-e559-4c1c-bfd2-ba6f6aaf4169
Parent UUID:    base
State:          created
Type:           multiattach
Location:       E:\BOINC\projects\lhcathome.cern.ch_lhcathome\Theory_2025_01_16_prod.vdi
Storage format: VDI
Format variant: dynamic default
Capacity:       20480 MBytes
Size on disk:   781 MBytes
Encryption:     disabled
Property:       AllocationBlockSize=1048576

2025-01-22 08:26:56 (39732): 
Command: VBoxManage -q storageattach "boinc_c44991dcf39ff0bd" --storagectl "Hard Disk Controller" --port 0 --device 0 --type hdd --mtype multiattach --medium "E:\BOINC/projects/lhcathome.cern.ch_lhcathome/Theory_2025_01_16_prod.vdi" 
Exit Code: -2135228409
Output:
VBoxManage.exe: error: Cannot attach medium 'E:\BOINC\projects\lhcathome.cern.ch_lhcathome\Theory_2025_01_16_prod.vdi': the media type 'MultiAttach' can only be attached to machines that were created with VirtualBox 4.0 or later
VBoxManage.exe: error: Details: code VBOX_E_INVALID_OBJECT_STATE (0x80bb0007), component SessionMachine, interface IMachine, callee IUnknown
VBoxManage.exe: error: Context: "AttachDevice(Bstr(pszCtl).raw(), port, device, DeviceType_HardDisk, pMedium2Mount)" at line 786 of file VBoxManageStorageController.cpp

2025-01-22 08:26:57 (39732): 
Command: VBoxManage -q showhdinfo "E:\BOINC/projects/lhcathome.cern.ch_lhcathome/Theory_2025_01_16_prod.vdi" 
Exit Code: 0
Output:
UUID:           6a4110e9-e559-4c1c-bfd2-ba6f6aaf4169
Parent UUID:    base
State:          created
Type:           multiattach
Location:       E:\BOINC\projects\lhcathome.cern.ch_lhcathome\Theory_2025_01_16_prod.vdi
Storage format: VDI
Format variant: dynamic default
Capacity:       20480 MBytes
Size on disk:   781 MBytes
Encryption:     disabled
Property:       AllocationBlockSize=1048576

2025-01-22 08:26:57 (39732): 
Command: VBoxManage -q closemedium disk "E:\BOINC\projects\lhcathome.cern.ch_lhcathome\Theory_2025_01_16_prod.vdi" 
Exit Code: 0
Output:

2025-01-22 08:26:57 (39732): 
Command: VBoxManage -q showhdinfo "E:\BOINC/projects/lhcathome.cern.ch_lhcathome/Theory_2025_01_16_prod.vdi" 
Exit Code: 0
Output:
UUID:           6a4110e9-e559-4c1c-bfd2-ba6f6aaf4169
Parent UUID:    base
State:          created
Type:           normal (base)
Location:       E:\BOINC\projects\lhcathome.cern.ch_lhcathome\Theory_2025_01_16_prod.vdi
Storage format: VDI
Format variant: dynamic default
Capacity:       20480 MBytes
Size on disk:   781 MBytes
Encryption:     disabled
Property:       AllocationBlockSize=1048576

2025-01-22 08:26:57 (39732): 
Command: VBoxManage -q storageattach "boinc_c44991dcf39ff0bd" --storagectl "Hard Disk Controller" --port 0 --device 0 --type hdd --medium "E:\BOINC/projects/lhcathome.cern.ch_lhcathome/Theory_2025_01_16_prod.vdi" 
Exit Code: 0
Output:

2025-01-22 08:26:58 (39732): 
Command: VBoxManage -q storageattach "boinc_c44991dcf39ff0bd" --storagectl "Hard Disk Controller" --port 0 --device 0 --type hdd --medium none 
Exit Code: 0
Output:

2025-01-22 08:26:58 (39732): 
Command: VBoxManage -q storageattach "boinc_c44991dcf39ff0bd" --storagectl "Hard Disk Controller" --port 0 --device 0 --type hdd --mtype multiattach --medium "E:\BOINC/projects/lhcathome.cern.ch_lhcathome/Theory_2025_01_16_prod.vdi" 
Exit Code: 0
Output:

2025-01-22 08:26:58 (39732): 
Command: VBoxManage -q storageattach "boinc_c44991dcf39ff0bd" --storagectl "Hard Disk Controller" --port 1 --device 0 --type dvddrive --medium "C:\Program Files\Oracle\VirtualBox/VBoxGuestAdditions.iso" 
Exit Code: 0
Output:

2025-01-22 08:26:58 (39732): 
Command: VBoxManage -q bandwidthctl "boinc_c44991dcf39ff0bd" add "boinc_c44991dcf39ff0bd_net" --type network --limit 1024G 
Exit Code: 0
Output:

2025-01-22 08:26:59 (39732): 
Command: VBoxManage -q modifyvm "boinc_c44991dcf39ff0bd" --natpf1 ",tcp,127.0.0.1,65078,,80" 
Exit Code: 0
Output:

2025-01-22 08:26:59 (39732): 
Command: VBoxManage -q list extpacks
Exit Code: 0
Output:
Extension Packs: 0

2025-01-22 08:26:59 (39732): 
Command: VBoxManage -q sharedfolder add "boinc_c44991dcf39ff0bd" --name "shared" --hostpath "E:\BOINC\slots\12/shared"
Exit Code: 0
Output:

2025-01-22 08:27:00 (39732): 
Command: VBoxManage -q startvm "boinc_c44991dcf39ff0bd" --type headless
Exit Code: 1
Output:
VBoxManage.exe: error: The virtual machine 'boinc_c44991dcf39ff0bd' has terminated unexpectedly during startup with exit code 1 (0x1).  More details may be available in 'E:\BOINC\slots\12\boinc_c44991dcf39ff0bd\Logs\VBoxHardening.log'
VBoxManage.exe: error: Details: code E_FAIL (0x80004005), component MachineWrap, interface IMachine
Waiting for VM "boinc_c44991dcf39ff0bd" to power on...

2025-01-22 08:27:00 (39732): 
Command: VBoxManage -q snapshot "boinc_c44991dcf39ff0bd" list 
Exit Code: -108
Output:
This machine does not have any snapshots

2025-01-22 08:27:00 (39732): 
Command: VBoxManage -q bandwidthctl "boinc_c44991dcf39ff0bd" remove "boinc_c44991dcf39ff0bd_net" 
Exit Code: 0
Output:

2025-01-22 08:27:01 (39732): 
Command: VBoxManage -q unregistervm "boinc_c44991dcf39ff0bd" --delete 
Exit Code: 0
Output:
0%...10%...20%...30%...40%...50%...60%...70%...80%...90%...100%

2025-01-22 08:27:06 (39732): called boinc_finish(1)

</stderr_txt>
]]>

©2025 CERN