I created a new app from the Asset Checkout sample. I spent hours customizing it and it was working like a dream on Friday. This morning, however, I opened it and the products table is showing as empty. I checked my data source (Excel file in my OneDrive for Business and confirmed the data is there.
I have tried:
Restoring a previous version of my app
Adding a new gallery with no filters to see if I can see the data
Creating a collection from my data to see if I could see the first 5 rows under File > Collections
Recreating the App
Creating a new Excel file and manually copying & pasting the data