Selecting a Data source under Form Properties creates Data Cards for each field in the data source (SharePoint list).
Each Data Card has the following controls/issues:
This is an in-built Power Apps function - there is no other function to add them automatically other than the one you are using.
Try creating them again (delete and add as new field value). The error is because there is no Value control.
You can add the control manually, but that is another subject and you should not have to.
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Each control in each datacard is throwing a name error. The details of the error identify the same location. e.g. StarVisible1.PCFTeamsTheme. I can't find any documentation on what a PCFTeamsTheme is.
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