I have a spreadsheet in Documents which I use on my dashboard. It reports on inventory details and I have set it up with Lookups to get values from other tabs on the same spreadsheet. 

For some reason the lookups have stopped working - where there was data 2 days ago, now the cells are blank. I have deleted the formula and re-entered it but the cell remains blank despite there being data in the source table. 

I am using Odoo Online V16.

Thanks!