TypeError: Cannot read properties of undefined (reading 'slice')

[PurpleRain9]

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JavaScript Error

TypeError: Cannot read properties of undefined (reading 'slice')
    at parseKey (http://127.0.0.1:8000/storeTrueFalse/1/1:175:45034)
    at e.value (http://127.0.0.1:8000/storeTrueFalse/1/1:175:45661)
    at e.value (http://127.0.0.1:8000/storeTrueFalse/1/1:175:44927)
    at e.value (http://127.0.0.1:8000/storeTrueFalse/1/1:175:44749)
    at e.value (http://127.0.0.1:8000/storeTrueFalse/1/1:175:43733)
    at e.value (http://127.0.0.1:8000/storeTrueFalse/1/1:175:43379)
    at m.value (http://127.0.0.1:8000/storeTrueFalse/1/1:175:33335)
    at t.format (http://127.0.0.1:8000/storeTrueFalse/1/1:175:105466)
    at Ic (http://127.0.0.1:8000/storeTrueFalse/1/1:175:108148)
    at Ef (http://127.0.0.1:8000/storeTrueFalse/1/1:170:186645)

Reproduction Steps

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1. …

User Agent

Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.0.0 Safari/537.36