Anki auto fill seems to cause plugin to crash

[zach7815]

Every time I try to auto fill different fields whether in bulk or individual cards, the autofill seems to cause the following report from anki:

To Reproduce
Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
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Specs (please complete the following information):

• OS: [e.g. Windows, iOS, Ubuntu]
• Anki Version [e.g. v2.0.52, v2.1.5]
• Chinese Support Version [e.g. v0.5.3-beta]

Additional context
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