Data Table constant error, "An Internal error occurred. Connection will refresh on next execution"

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I have a Data Table linked to a sheet that gives a constant error (above), and will not work no matter how many times I rebuild it. There are no numbers with special characters, and the dataset is pretty standard stuff. I can't find any info at all on Data Table errors, and this has been going on for 24-hours.

I used Data Shuttle to bring the data into the Data Table from OneDrive with no errors.

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