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ValueError("Invalid value") in basedatatypes.py

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After upgrading to Plotly 5 (either 5.1.0 or 5.2.2), I am seeing the error (given below) for various plots, at random. The issue goes away if Plotly is downgraded to 4.14.3.

File "plotly/basedatatypes.py", line 3952, in _index_is
raise ValueError("Invalid value")

Unfortunately, I do not have a simple reproducible example to open an issue, but here is the description of the problem.

I have a Dash app that plots several graphs. When the Dash app starts, some plots do not get displayed, and I see the error. This only occurs on the initial startup of the app. When the webpage is refreshed, the error does not re-appear, and all plots get displayed without errors.

If I downgrade to Plotly 4.14.3, the issue goes away entirely.

Any ideas what might be causing this?

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