Keyboard dictation error - AFAggregator logDictationFailedWithError:] Error Domain=kAFAssistantErrorDomain Code=221

In my text view I'm getting following error when I tap on mic button on keyboard to start dictation. What is this error and how to fix it?

[Utility] +[AFAggregator logDictationFailedWithError:] Error Domain=kAFAssistantErrorDomain Code=221 "(null)" UserInfo={NSUnderlyingError=0x2832cf8a0 {Error Domain=NSOSStatusErrorDomain Code=561017449 "(null)"}}

!!! _NSLayoutTreeGetBaselineOffsetForGlyphAtIndex invalid glyph index 0