Can't shutdown : restart automatically (10.5.7)

[BezLG]

Hi,

it's been 3 times that I try to shutdown.
It restarts automatically after 2/3 minutes with the message below (never understood).
I'm on Catalina 10.5.7.
What's wrong ???
I reset SMC, NVRAM, PRAM... didn't work.
Thank's for your help.

Message :

panic(cpu 2 caller 0xffffff7f8ebbaaae): watchdog timeout: no checkins from watchdogd in 308 seconds (4223 totalcheckins since monitoring last enabled), shutdown in progress
Backtrace (CPU 2), Frame : Return Address
0xffffff83b0f6bc40 : 0xffffff800e11a65d
0xffffff83b0f6bc90 : 0xffffff800e254a75
0xffffff83b0f6bcd0 : 0xffffff800e2465fe
0xffffff83b0f6bd20 : 0xffffff800e0c0a40
0xffffff83b0f6bd40 : 0xffffff800e119d27
0xffffff83b0f6be40 : 0xffffff800e11a117
0xffffff83b0f6be90 : 0xffffff800e8c1ad8
0xffffff83b0f6bf00 : 0xffffff7f8ebbaaae
0xffffff83b0f6bf10 : 0xffffff7f8ebba486
0xffffff83b0f6bf50 : 0xffffff7f8ebcfd9c
0xffffff83b0f6bfa0 : 0xffffff800e0c013e
Kernel Extensions in backtrace:
com.apple.driver.watchdog(1.0)[B6A95892-6C75-3CF5-A6CC-6D83F30FA1D5]@0xffffff7f8ebb9000->0xffffff7f8ebc1fff
com.apple.driver.AppleSMC(3.1.9)[D2F0B610-83F8-3B84-B0BD-D9D0CC95A697]@0xffffff7f8ebc2000->0xffffff7f8ebe0fff
dependency: com.apple.iokit.IOACPIFamily(1.4)[2956198D-24F2-3790-A9B2-1EAB9434B906]@0xffffff7f8ebb0000
dependency: com.apple.driver.watchdog(1)[B6A95892-6C75-3CF5-A6CC-6D83F30FA1D5]@0xffffff7f8ebb9000
dependency: com.apple.iokit.IOPCIFamily(2.9)[44472E6F-8DA0-3B46-ADEF-AFF76EC6C6DB]@0xffffff7f8eb31000

BSD process name corresponding to current thread: kernel_task
Boot args: dart=0

Mac OS version:
19H2

Kernel version:
Darwin Kernel Version 19.6.0: Mon Aug 31 22:12:52 PDT 2020; root:xnu-6153.141.2~1/RELEASE_X86_64
Kernel UUID: 05D51A3D-3A87-3FF0-98C3-9CF3827A3EDD
Kernel slide: 0x000000000de00000
Kernel text base: 0xffffff800e000000
__HIB text base: 0xffffff800df00000
System model name: iMac18,3 (Mac-BE088AF8C5EB4FA2)
System shutdown begun: YES
Panic diags file available: YES (0x0)

System uptime in nanoseconds: 42523656621329
last loaded kext at 33239095213299: >!AXsanScheme 3 (addr 0xffffff7f936ba000, size 32768)
last unloaded kext at 33299717021113: >!AXsanScheme 3 (addr 0xffffff7f936ba000, size 32768)
loaded kexts:
org.pqrs.driver.Karabiner 10.22.0
com.Cycling74.driver.Soundflower 2
com.digidesign.iokit.DigiDal 9.0f4
com.waves.driver.soundgrid 9.7.99
com.driver.LogJoystick 2.0
com.insanelymac.AtherosE2200Ethernet 2.2.2
org.hwsensors.driver.GPUSensors 1800
com.insanelymac.!IMausiEthernet 2.4.0
org.hwsensors.driver.LPCSensors 1800
org.hwsensors.driver.ACPISensors 1800
org.hwsensors.driver.CPUSensors 1800
as.vit9696.WhateverGreen 1.4.2
as.vit9696.!AALC 1.5.2
as.vit9696.Lilu 1.4.7
org.netkas.driver.FakeSMC 1800
@filesystems.afpfs 11.2
@nke.asp-tcp 8.1
@filesystems.smbfs 3.4.4
@fileutil 20.036.15
@filesystems.autofs 3.0
>!AUpstreamUserClient 3.6.8
>!AMCCSControl 1.14
@kext.AMDFramebuffer 3.1.0
>!AHDA 283.15
@kext.AMDRadeonServiceManager 3.1.0
@kext.AMDRadeonX4000 3.1.0
@AGDCPluginDisplayMetrics 5.2.6
>!AHV 1
|IOUserEthernet 1.0.1
|IO!BSerialManager 7.0.6f7
>pmtelemetry 1
@Dont_Steal_Mac_OS_X 7.0.0
>!A!IPCHPMC 2.0.1
@kext.AMD9500!C 3.1.0
>!A!ISlowAdaptiveClocking 4.0.0
>!AGFXHDA 100.1.429
>AudioAUUC 1.70
>ACPI_SMC_PlatformPlugin 1.0.0
>!ARAID 5.1.0
@filesystems.apfs 1412.141.1
>!AVirtIO 1.0
@filesystems.hfs.kext 522.100.5
@!AFSCompression.!AFSCompressionTypeDataless 1.0.0d1
@BootCache 40
>AirPort.BrcmNIC 1400.1.1
@!AFSCompression.!AFSCompressionTypeZlib 1.0.0
>!AAHCIPort 341.140.1
@private.KextAudit 1.0
>!AACPIButtons 6.1
>!ARTC 2.0
>!AHPET 1.8
>!ASMBIOS 2.1
>!AAPIC 1.7
$!AImage4 1
@nke.applicationfirewall 303
$TMSafetyNet 8
@!ASystemPolicy 2.0.0
|EndpointSecurity 1
$SecureRemotePassword 1.0
@kext.triggers 1.0
>!AHIDKeyboard 209
>!ASMBus!C 1.0.18d1
|IOSMBus!F 1.1
>DspFuncLib 283.15
@kext.OSvKernDSPLib 529
@kext.AMDRadeonX4000HWLibs 1.0
|IOAccelerator!F2 438.7.3
@kext.AMDRadeonX4000HWServices 3.1.0
|IOAVB!F 850.1
>!AHDA!C 283.15
|IOHDA!F 283.15
@!AGPUWrangler 5.2.6
@kext.AMDSupport 3.1.0
@!AGraphicsDeviceControl 5.2.6
|IOSlowAdaptiveClocking!F 1.0.0
|IONDRVSupport 576.1
|IOGraphics!F 576.1
>IOPlatformPluginLegacy 1.0.0
>IOPlatformPlugin!F 6.0.0d8
@plugin.IOgPTPPlugin 840.3
|IOEthernetAVB!C 1.1.0
|Broadcom!BHost!CUSBTransport 7.0.6f7
|IO!BHost!CUSBTransport 7.0.6f7
|IO!BHost!CTransport 7.0.6f7
|IO!B!F 7.0.6f7
|IO!BPacketLogger 7.0.6f7
>usb.!UHub 1.2
>!UAudio 323.4
>usb.networking 5.0.0
>usb.!UHostCompositeDevice 1.2
|IOAudio!F 300.2
@vecLib.kext 1.2.0
|IOSerial!F 11
|IOSurface 269.11
|IONVMe!F 2.1.0
|IO80211!F 1200.12.2b1
>mDNSOffloadUserClient 1.0.1b8
>corecapture 1.0.4
@filesystems.hfs.encodings.kext 1
|IOAHCIBlock!S 316.100.5
|IOSkywalk!F 1
|IOAHCI!F 290.0.1
>usb.!UXHCIPCI 1.2
>usb.!UXHCI 1.2
>usb.!UHostPacketFilter 1.0
|IOUSB!F 900.4.2
>!AEFINVRAM 2.1
>!AEFIRuntime 2.1
|IOHID!F 2.0.0
$quarantine 4
$sandbox 300.0
@kext.!AMatch 1.0.0d1
>DiskImages 493.0.0
>!AFDEKeyStore 28.30
>!AEffaceable!S 1.0
>!ASSE 1.0
>!AKeyStore 2
>!UTDM 489.120.1
|IOSCSIBlockCommandsDevice 422.120.3
>!ACredentialManager 1.0
>KernelRelayHost 1
>!ASEPManager 1.0.1
>IOSlaveProcessor 1
|IOUSBMass!SDriver 157.140.1
|IOSCSIArchitectureModel!F 422.120.3
|IO!S!F 2.1
|IOUSBHost!F 1.2
>!UHostMergeProperties 1.2
>usb.!UCommon 1.0
>!ABusPower!C 1.0
|CoreAnalytics!F 1
>!AMobileFileIntegrity 1.0.5
@kext.CoreTrust 1
|IOTimeSync!F 840.3
|IONetworking!F 3.4
|IOReport!F 47
>!AACPIPlatform 6.1
>!ASMC 3.1.9
>watchdog 1
|IOPCI!F 2.9
|IOACPI!F 1.4
@kec.pthread 1
@kec.corecrypto 1.0
@kec.Libm 1

 

[Middleman]

Please compress your EFI folder and attach a copy of it here, and also state your system specs.

 

[BezLG]

Thanks for answering.
Here's my EFi.
specs :
Catalina 10.5.7
Z370 AORUS Gaming 7
i7 8700K
RX 580 Pulse 8GB
32 Go 2666 MHz DDR4
recognize as iMac (Retina 5K, 27-inch, 2017)
(if you need anything else...)