Unittest Error read_excel

[patricklnz]

Bug description

Unittests fail with TypeError: 'Sequence' object is not iterable after pandas.read_excel was called.

Version

Any

To reproduce

run epidata unittests

Relevant log output

No response

Add any relevant information, e.g. used compiler, screenshots.

No response

Checklist

• Attached labels, especially loc:: or model:: labels.
• Linked to project