Why does my iMac shut down for seemingly no reason?

My iMac keeps shutting down for no reason, saying it shut down because of a problem. Here is the crash report.

Machine-check capabilities: 0x0000000001000c0a
 family: 6 model: 71 stepping: 1 microcode: 33
 signature: 0x40671
 Intel(R) Core(TM) i5-5675R CPU @ 3.10GHz
 10 error-reporting banks
Processor 0: IA32_MCG_STATUS: 0x0000000000000005
 IA32_MC0_STATUS(0x401): 0xb200000000090005
mp_kdp_enter() timed-out on cpu 0, NMI-ing
mp_kdp_enter() NMI pending on cpus: 0 1 2 3
mp_kdp_enter() timed-out during locked wait after NMI;expected 4 acks but received 1 after 13234669 loops in 1546420321 ticks
panic(cpu 0 caller 0xffffff8008865b2c): "Machine Check at 0xffffff8008877a83, registers:\n" "CR0: 0x000000008001003b, CR2: 0x0000000116965000, CR3: 0x000000000ca33000, CR4: 0x00000000003626e0\n" "RAX: 0x0000000000000033, RBX: 0x0000000000000000, RCX: 0x0000000000000001, RDX: 0x0000000000000000\n" "RSP: 0xffffff911b553ef0, RBP: 0xffffff911b553f20, RSI: 0xffffff80091f52c0, RDI: 0xffffff8009058390\n" "R8:  0x0000000000000000, R9:  0x0000000000000000, R10: 0x0000000000000008, R11: 0x0000000000000000\n" "R12: 0x0000000000000033, R13: 0x000000000010f527, R14: 0x0000000dbb9b0e14, R15: 0x0000000000000000\n" "RFL: 0x0000000000000046, RIP: 0xffffff8008877a83, CS:  0x0000000000000008, SS:  0x0000000000000010\n" "Error code: 0x0000000000000000\n"@/BuildRoot/Library/Caches/com.apple.xbs/Sources/xnu/xnu-6153.81.5/osfmk/i386/trap_native.c:168
Backtrace (CPU 0), Frame : Return Address
0xffffff8008551310 : 0xffffff800873bb2b 
0xffffff8008551360 : 0xffffff80088734d5 
0xffffff80085513a0 : 0xffffff8008864f4e 
0xffffff80085513f0 : 0xffffff80086e2a40 
0xffffff8008551410 : 0xffffff800873b217 
0xffffff8008551510 : 0xffffff800873b5fb 
0xffffff8008551560 : 0xffffff8008ed2aa9 
0xffffff80085515d0 : 0xffffff8008865b2c 
0xffffff80085516c0 : 0xffffff8008ed2c28 
0xffffff80085516d0 : 0xffffff80086e329f 
0xffffff911b553f20 : 0xffffff8008866f6a 
0xffffff911b553f40 : 0xffffff8008760a37 
0xffffff911b553f80 : 0xffffff8008760bf8 
0xffffff911b553fa0 : 0xffffff80086e213e 

BSD process name corresponding to current thread: kernel_task

Mac OS version:
19D76

Kernel version:
Darwin Kernel Version 19.3.0: Thu Jan  9 20:58:23 PST 2020; root:xnu-6153.81.5~1/RELEASE_X86_64
Kernel UUID: A8DDE75C-CD97-3C37-B35D-1070CC50D2CE
Kernel slide:     0x0000000008400000
Kernel text base: 0xffffff8008600000
__HIB  text base: 0xffffff8008500000
System model name: iMac16,2 (Mac-FFE5EF870D7BA81A)
System shutdown begun: NO
Panic diags file available: YES (0x0)

System uptime in nanoseconds: 59984666823
last loaded kext at 6922220964: >AudioAUUC    1.70 (addr 0xffffff7f8bea8000, size 32768)
loaded kexts:
>AudioAUUC    1.70
@fileutil    20.036.15
>!AUpstreamUserClient    3.6.8
>!A!IBDWGraphics    14.0.4
>!A!IBDWGraphicsFramebuffer    14.0.4
>!ATopCaseHIDEventDriver    3430.1
>!UTopCaseDriver    3430.1
>AGPM    111.4.2
>!APlatformEnabler    2.7.0d0
>X86PlatformShim    1.0.0
|!ABCM5701Ethernet    10.3.5
@filesystems.autofs    3.0
>!AHDAHardwareConfigDriver    283.15
>!AHDA    283.15
>!AGraphicsDevicePolicy    4.7.2
@AGDCPluginDisplayMetrics    4.7.2
>eficheck    1
>!AHV    1
|IOUserEthernet    1.0.1
>AGDCBacklightControl    4.7.2
|IO!BSerialManager    7.0.3f5
>!ALPC    3.1
>!ABacklight    180.1
>!AThunderboltIP    3.1.3
>pmtelemetry    1
@Dont_Steal_Mac_OS_X    7.0.0
>!ASMCLMU    212
>!AMCCSControl    1.13
>!A!ISlowAdaptiveClocking    4.0.0
>ACPI_SMC_PlatformPlugin    1.0.0
>!AFIVRDriver    4.1.0
|Broadcom!B20703USBTransport    7.0.3f5
|IO!BUSBDFU    7.0.3f5
@filesystems.apfs    1412.81.1
>!AFileSystemDriver    3.0.1
>!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
>AirPort.BrcmNIC    1400.1.1
>!AAHCIPort    341.0.2
@private.KextAudit    1.0
>!ARTC    2.0
>!AACPIButtons    6.1
>!AHPET    1.8
>!ASMBIOS    2.1
>!AACPIEC    6.1
>!AAPIC    1.7
$!AImage4    1
@nke.applicationfirewall    303
$TMSafetyNet    8
@!ASystemPolicy    2.0.0
|EndpointSecurity    1
|IOAccelerator!F2    438.3.1
>!AHS!BDriver    3430.1
>IO!BHIDDriver    7.0.3f5
>!AMultitouchDriver    3430.1
>!AInputDeviceSupport    3430.1
>!AHIDKeyboard    209
@kext.triggers    1.0
>DspFuncLib    283.15
@kext.OSvKernDSPLib    529
>!AGraphicsControl    4.7.2
|IOAVB!F    800.17
>!ASSE    1.0
>!ABacklightExpert    1.1.0
|IONDRVSupport    569.4
>!AThunderboltEDMSink    4.2.2
@!AGPUWrangler    4.7.2
@!AGraphicsDeviceControl    4.7.2
|IOSlowAdaptiveClocking!F    1.0.0
>IOPlatformPluginLegacy    1.0.0
>X86PlatformPlugin    1.0.0
>IOPlatformPlugin!F    6.0.0d8
>!AHDA!C    283.15
|IOGraphics!F    569.4
|IOHDA!F    283.15
|Broadcom!BHost!CUSBTransport    7.0.3f5
|IO!BHost!CUSBTransport    7.0.3f5
|IO!BHost!CTransport    7.0.3f5
|IO!B!F    7.0.3f5
|IO!BPacketLogger    7.0.3f5
>!ASMBus!C    1.0.18d1
>!ASMBusPCI    1.0.14d1
@plugin.IOgPTPPlugin    810.1
|IOEthernetAVB!C    1.1.0
>usb.IOUSBHostHIDDevice    1.2
>!UAudio    320.49
>usb.cdc    5.0.0
>usb.networking    5.0.0
>usb.!UHostCompositeDevice    1.2
>!AXsanScheme    3
|IOAudio!F    300.2
@vecLib.kext    1.2.0
|IOSerial!F    11
|IOSurface    269.6
@filesystems.hfs.encodings.kext    1
|IOAHCIBlock!S    316.80.1
|IO80211!F    1200.12.2b1
>mDNSOffloadUserClient    1.0.1b8
>corecapture    1.0.4
|IOSkywalk!F    1
|IOAHCI!F    290.0.1
>!A!ILpssGspi    3.0.60
>usb.!UXHCIPCI    1.2
>usb.!UXHCI    1.2
>!AThunderboltDPOutAdapter    6.2.5
>!AThunderboltDPInAdapter    6.2.5
>!AThunderboltDPAdapter!F    6.2.5
>!AThunderboltPCIDownAdapter    2.5.4
>!AThunderboltNHI    5.8.6
|IOThunderbolt!F    7.6.0
>usb.!UHostPacketFilter    1.0
|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    489.80.2
|IOSCSIBlockCommandsDevice    422.0.2
>!ACredentialManager    1.0
>KernelRelayHost    1
>!ASEPManager    1.0.1
>IOSlaveProcessor    1
|IOUSBMass!SDriver    157.40.7
|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
|IOTimeSync!F    810.1
|IONetworking!F    3.4
>!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