GTFS fails because of lack of field but field does exist

[Moseleyi]

Here's what the shop_times.txt file look like:

And yet ArcGIS Pro is telling me that stop_sequence is missing:

[DanPatterson]

Try converting the text file to a geodatabase file.  Pro may allow you to view a text file as a table but processing tools may not recognize it as a datasource with fields

[Moseleyi]

I added the files as tables:

But the tool wants the folder with txt files: