I'd look for clues in your console. Filter on "Watchpower".
>LaunchPad>Other>Console
hth
If you get any console messages cut and paste them here.
Haven't a clue what anything in the appended lines mean (gotten from the path you said to check), but it appears to involve "usbserver". so maybe its relevant to the problem being that the computer/inverter connection is via USB.
I abbreviated the 3rd section as it started repeating dozens of similar lines.
usbserver_2021-08-28-000135)_as-MacBook-Pro.crash
================
Path: /Applications/WatchPower/*/usbserver
Referenced from: /Applications/WatchPower/*/usbserver
0x10a522000 - 0x10a524fff +usbserver (0) <F17913F2-323E-3B1A-AC9E-8C8808B3F876> /Applications/WatchPower/*/usbserver
================
Process: usbserver [55846]
Path: /Applications/WatchPower/*/usbserver
Identifier: usbserver
Version: 0
Code Type: X86-64 (Native)
Parent Process: java [55845]
Responsible: usbserver [55846]
User ID: 501
Date/Time: 2021-08-28 00:01:31.982 -0400
OS Version: Mac OS X 10.12.6 (16G29)
Report Version: 12
Anonymous UUID: 22E302E5-634B-301F-5469-4FDCA9984D26
Sleep/Wake UUID: 98B19E25-54F7-440A-A75E-7CED098EF083
Time Awake Since Boot: 170000 seconds
Time Since Wake: 34000 seconds
System Integrity Protection: enabled
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Exception Note: EXC_CORPSE_NOTIFY
Termination Reason: DYLD, [0x4] Symbol missing
Dyld Error Message:
Symbol not found: ____chkstk_darwin
Referenced from: /Applications/WatchPower/*/usbserver
Expected in: /usr/lib/libSystem.B.dylib
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 dyld 0x000000011885c9ee __abort_with_payload + 10
1 dyld 0x000000011885c43b abort_with_payload_wrapper_internal + 90
2 dyld 0x000000011885c464 abort_with_payload + 9
3 dyld 0x0000000118837793 dyld::halt(char const*) + 361
4 dyld 0x000000011883789e dyld::fastBindLazySymbol(ImageLoader**, unsigned long) + 139
5 libdyld.dylib 0x00007fffa4462282 dyld_stub_binder + 282
6 ??? 0x000000010a526170 0 + 4468138352
7 usbserver 0x000000010a524a7b main + 27
8 libdyld.dylib 0x00007fffa4466235 start + 1
Thread 0 crashed with X86 Thread State (64-bit):
rax: 0x0000000002000209 rbx: 0x0000000000000004 rcx: 0x00007fff556dca78 rdx: 0x00007fff556dcef0
rdi: 0x0000000000000006 rsi: 0x0000000000000004 rbp: 0x00007fff556dcad0 rsp: 0x00007fff556dca78
r8: 0x00007fff556dcaf0 r9: 0x0000000000000000 r10: 0x0000000000000068 r11: 0x0000000000000246
r12: 0x0000000000000068 r13: 0x00007fff556dcef0 r14: 0x0000000000000006 r15: 0x0000000000000000
rip: 0x000000011885c9ee rfl: 0x0000000000000246 cr2: 0x00007fffa46b7000
Logical CPU: 0
Error Code: 0x02000209
Trap Number: 133
Binary Images:
0x10a522000 - 0x10a524fff +usbserver (0) <F17913F2-323E-3B1A-AC9E-8C8808B3F876> /Applications/WatchPower/*/usbserver
0x10a535000 - 0x10a549ff7 +libusb-1.0.0.dylib (0) <DC22FB46-8489-32A8-825F-F1218E2536D3> /Library/Java/Extensions/libusb-1.0.0.dylib
0x118833000 - 0x118870dc7 dyld (433.5) <322C06B7-8878-311D-888C-C8FD2CA96FF3> /usr/lib/dyld
0x7fff8b20f000 - 0x7fff8b20ffff com.apple.Accelerate (1.11 - Accelerate 1.11) <D6A08A72-7758-3CA8-813D-105F6E313E67> /System/Library/Frameworks/Accelerate.framework/Versions/A/Accelerate
0x7fff8b228000 - 0x7fff8b868fe3 com.apple.vImage (8.1 - ???) <4C535C25-EF87-35BE-9BE8-D080A5C24084> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vImage.framework/Versions/A/vImage
0x7fff8b869000 - 0x7fff8ba30fef libBLAS.dylib (1185.50.4) <7AF8DB9A-E33B-30EB-8767-87AFB951E231> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib
0x7fff8ba31000 - 0x7fff8ba48fff libBNNS.dylib (15) <26F32264-148E-35E5-A280-CA035CB3D6F0> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBNNS.dylib
0x7fff8ba49000 - 0x7fff8be54fff libLAPACK.dylib (1185.50.4) <51B2BABA-F736-3663-885A-65A8991D3560> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libLAPACK.dylib
0x7fff8be55000 - 0x7fff8be6bfff libLinearAlgebra.dylib (1185.50.4) <0EC25E70-05DC-3615-85B6-81721566CF1D> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libLinearAlgebra.dylib
0x7fff8be6c000 - 0x7fff8be72fff libQuadrature.dylib (3) <EF56C8E6-DE22-3C69-B543-A8648F335FDD> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libQuadrature.dylib
0x7fff8be73000 - 0x7fff8be86ff7 libSparseBLAS.dylib (1185.50.4) <0BDCF6A7-0228-3719-81C7-B6EBC7911320> /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libSparseBLAS.dylib