https://github.com/rime/squirrel/issues/948
Workaround before this issue is completely resolved: start Squirrel in the terminal, the logs will be printed to stderr
/Library/Input\ Methods/Squirrel.app/Contents/MacOS/Squirrel --quit && /Library/Input\ Methods/Squirrel.app/Contents/MacOS/Squirrel
After debugging, press ^C to exit, the system will automatically restart Rime.