here is the debug info ,maybe it can help you to fix it

Last login: Tue Jan 4 00:36:54 on ttys001
/Applications/BetterTouchTool.app/Contents/MacOS/BetterTouchTool ; exit;
chenhetao@chenhetaodeMBP ~ % /Applications/BetterTouchTool.app/Contents/MacOS/BetterTouchTool ; exit;
2022-01-04 00:37:21.740 BetterTouchTool[5655:169528] -[EKReminder eventIdentifier]: unrecognized selector sent to instance 0x150fa7a80
2022-01-04 00:37:21.741 BetterTouchTool[5655:169528] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[EKReminder eventIdentifier]: unrecognized selector sent to instance 0x150fa7a80'
*** First throw call stack:
(
0 CoreFoundation 0x00000001bdc541cc __exceptionPreprocess + 240
1 libobjc.A.dylib 0x00000001bd9a57b8 objc_exception_throw + 60
2 CoreFoundation 0x00000001bdce71a0 -[NSObject(NSObject) __retain_OA] + 0
3 CoreFoundation 0x00000001bdbb4360 forwarding + 1728
4 CoreFoundation 0x00000001bdbb3be0 _CF_forwarding_prep_0 + 96
5 BetterTouchTool 0x0000000104cef590 __42-[BTTNotchBarNextEventsWidget updateEvent]_block_invoke + 5072
6 libdispatch.dylib 0x00000001bd948e60 _dispatch_call_block_and_release + 32
7 libdispatch.dylib 0x00000001bd94abac _dispatch_client_callout + 20
8 libdispatch.dylib 0x00000001bd9590ac _dispatch_main_queue_callback_4CF + 944
9 CoreFoundation 0x00000001bdc15f00 CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE + 16
10 CoreFoundation 0x00000001bdbd38c0 __CFRunLoopRun + 2540
11 CoreFoundation 0x00000001bdbd2734 CFRunLoopRunSpecific + 600
12 HIToolbox 0x00000001c6764f68 RunCurrentEventLoopInMode + 292
13 HIToolbox 0x00000001c6764cdc ReceiveNextEventCommon + 552
14 HIToolbox 0x00000001c6764a9c _BlockUntilNextEventMatchingListInModeWithFilter + 72
15 AppKit 0x00000001c0728ce0 _DPSNextEvent + 844
16 AppKit 0x00000001c0727584 -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 1332
17 AppKit 0x00000001c07195a4 -[NSApplication run] + 596
18 AppKit 0x00000001c06eac78 NSApplicationMain + 1064
19 dyld 0x00000001067b50f4 start + 520
)
libc++abi: terminating with uncaught exception of type NSException
zsh: abort /Applications/BetterTouchTool.app/Contents/MacOS/BetterTouchTool

Saving session...
...copying shared history...
...saving history...truncating history files...
...completed.

[进程已完成]

Thank you, I'll fix this later today!