panic(cpu 8 caller 0xffffff7f8b4ebad5): userspace watchdog timeout: no successful checkins from com.apple.WindowServer in 140 seconds
service: com.apple.logd, total successful checkins since load (1050 seconds ago): 106, last successful checkin: 0 seconds ago
service: com.apple.WindowServer, total successful checkins since load (1020 seconds ago): 77, last successful checkin: 140 seconds ago

Backtrace (CPU 8), Frame : Return Address
0xffffffa770503820 : 0xffffff800a93f98b 
0xffffffa770503870 : 0xffffff800aa76c15 
0xffffffa7705038b0 : 0xffffff800aa6861e 
0xffffffa770503900 : 0xffffff800a8e6a40 
0xffffffa770503920 : 0xffffff800a93f077 
0xffffffa770503a20 : 0xffffff800a93f45b 
0xffffffa770503a70 : 0xffffff800b0d2e05 
0xffffffa770503ae0 : 0xffffff7f8b4ebad5 
0xffffffa770503af0 : 0xffffff7f8b4eb7e6 
0xffffffa770503b10 : 0xffffff800b067adb 
0xffffffa770503b60 : 0xffffff800b070a73 
0xffffffa770503ca0 : 0xffffff800aa26672 
0xffffffa770503db0 : 0xffffff800a9457f8 
0xffffffa770503e10 : 0xffffff800a91c515 
0xffffffa770503e70 : 0xffffff800a932f75 
0xffffffa770503f00 : 0xffffff800aa4eaf5 
0xffffffa770503fa0 : 0xffffff800a8e7226 
      Kernel Extensions in backtrace:
         com.apple.driver.watchdog(1.0)[58392D62-D9E8-3022-85C1-B78AC93B9167]@0xffffff7f8b4ea000->0xffffff7f8b4f2fff

BSD process name corresponding to current thread: watchdogd

Mac OS version:
19A583

Kernel version:
Darwin Kernel Version 19.0.0: Wed Sep 25 20:18:50 PDT 2019; root:xnu-6153.11.26~2/RELEASE_X86_64
Kernel UUID: 70EDD61F-86EE-3E1B-873F-98D909B78160
Kernel slide:     0x000000000a600000
Kernel text base: 0xffffff800a800000
__HIB  text base: 0xffffff800a700000
System model name: iMac19,1 (Mac-AA95B1DDAB278B95)
System shutdown begun: NO
Panic diags file available: YES (0x0)

System uptime in nanoseconds: 1060894737087
last loaded kext at 261835584998: @filesystems.smbfs	3.4 (addr 0xffffff7f9038c000, size 446464)
last unloaded kext at 805227163951: >!ASMCRTC	1.0 (addr 0xffffff7f8bfa5000, size 28672)
loaded kexts:
@filesystems.smbfs	3.4
>!ATopCaseHIDEventDriver	153
>!AUpstreamUserClient	3.6.8
@kext.AMDFramebuffer	3.0.0
>AudioAUUC	1.70
@kext.AMDRadeonX5000	3.0.0
@kext.AMDRadeonServiceManager	3.0.0
>!AGraphicsDevicePolicy	4.1.46
@AGDCPluginDisplayMetrics	4.1.46
@fileutil	20.036.15
@filesystems.autofs	3.0
>!AHV	1
|IOUserEthernet	1.0.1
|IO!BSerialManager	7.0.0f8
>BCMWLANFirmware4355.Hashstore	1
>AGPM	111.1.18
>!APlatformEnabler	2.7.0d0
>X86PlatformShim	1.0.0
>pmtelemetry	1
>!AHDA	283.14
>BCMWLANFirmware4377.Hashstore	1
>!A!IKBLGraphics	14.0.0
@Dont_Steal_Mac_OS_X	7.0.0
>BCMWLANFirmware4364.Hashstore	1
@kext.AMD10000!C	3.0.0
>!AThunderboltIP	3.1.3
|!ABCM5701Ethernet	10.3.5
>!AGFXHDA	100.1.421
>!ABCMWLANBusInterfacePCIe	1
>eficheck	1
>!A!IPCHPMC	2.0.1
>!A!ICFLGraphicsFramebuffer	14.0.0
>!ASMCLMU	212
>!AMCCSControl	1.12
>!A!ISlowAdaptiveClocking	4.0.0
>MaxTranserSizeOverrideDriver	489.11.2
>!AVirtIO	1.0
@filesystems.hfs.kext	522.0.9
@!AFSCompression.!AFSCompressionTypeDataless	1.0.0d1
@BootCache	40
@!AFSCompression.!AFSCompressionTypeZlib	1.0.0
>!ASDXC	1.7.7
@filesystems.apfs	1412.11.7
>!AAHCIPort	341.0.2
@private.KextAudit	1.0
>!AACPIButtons	6.1
>!ARTC	2.0
>!ASMBIOS	2.1
>!AACPIEC	6.1
>!AAPIC	1.7
$!AImage4	1
@nke.applicationfirewall	302
$TMSafetyNet	8
@!ASystemPolicy	2.0.0
|EndpointSecurity	1
>!AHIDKeyboard	209
>!AActuatorDriver	3400.35
>!AMultitouchDriver	3400.35
>!AInputDeviceSupport	3400.27
>!AHS!BDriver	153
>IO!BHIDDriver	7.0.0f8
@kext.AMDRadeonX5400HWLibs	1.0
@kext.AMDRadeonX5000HWServices	3.0.0
>!AGraphicsControl	4.1.46
@kext.triggers	1.0
|IOAVB!F	800.17
>!ASSE	1.0
@plugin.IOgPTPPlugin	800.14
>DspFuncLib	283.14
@kext.OSvKernDSPLib	529
>!AHDA!C	283.14
|IOHDA!F	283.14
@!AGPUWrangler	4.1.46
|IOEthernetAVB!C	1.1.0
|IOAudio!F	300.2
@vecLib.kext	1.2.0
|IONDRVSupport	558.3
>!ABCMWLANCore	1.0.0
>mDNSOffloadUserClient	1.0.1b8
>IOImageLoader	1.0.0
|IO80211!FV2	1200.12.2b1
>corecapture	1.0.4
>!ASMBusPCI	1.0.14d1
|IO!BHost!CUARTTransport	7.0.0f8
|IO!BHost!CTransport	7.0.0f8
|IO!B!F	7.0.0f8
|IO!BPacketLogger	7.0.0f8
>!A!ILpssUARTv1	3.0.60
>!A!ILpssUARTCommon	3.0.60
>!AOnboardSerial	1.0
|IOSkywalk!F	1
@kext.AMDSupport	3.0.0
@!AGraphicsDeviceControl	4.1.46
|IOAccelerator!F2	438.1.23
>X86PlatformPlugin	1.0.0
>IOPlatformPlugin!F	6.0.0d8
>!ASMBus!C	1.0.18d1
|IOGraphics!F	558.3
|IOSlowAdaptiveClocking!F	1.0.0
>usb.!UHub	1.2
>usb.networking	5.0.0
>usb.!UHostCompositeDevice	1.2
|IOSerial!F	11
|IOSurface	269.6
@filesystems.hfs.encodings.kext	1
>!AThunderboltPCIDownAdapter	2.5.2
>!AThunderboltDPInAdapter	6.2.3
>!AThunderboltDPAdapter!F	6.2.3
>!AHPM	3.4.4
>!A!ILpssI2C!C	3.0.60
>!A!ILpssDmac	3.0.60
>!A!ILpssI2C	3.0.60
>!AThunderboltNHI	5.5.8
|IOThunderbolt!F	7.4.5
|IONVMe!F	2.1.0
|IOAHCI!F	290.0.1
>usb.!UXHCIPCI	1.2
>usb.!UXHCI	1.2
|IOUSB!F	900.4.2
>!AEFINVRAM	2.1
>!AEFIRuntime	2.1
|IOSMBus!F	1.1
|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
>!AKeyStore	2
>!UTDM	489.11.2
|IOSCSIBlockCommandsDevice	422.0.2
>!ACredentialManager	1.0
>KernelRelayHost	1
>!ASEPManager	1.0.1
>IOSlaveProcessor	1
|IOTimeSync!F	800.14
|IONetworking!F	3.4
|IOUSBMass!SDriver	157.11.2
|IOSCSIArchitectureModel!F	422.0.2
|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
|IOReport!F	47
>!AACPIPlatform	6.1
>!ASMC	3.1.9
>watchdog	1
|IOPCI!F	2.9
|IOACPI!F	1.4
@kec.pthread	1
@kec.Libm	1
@kec.corecrypto	1.0