I'd like to ensure that you'll be able to use pay bills shortcut in the vendor center with no issues.
I tried paying bills using the option on the vendor center and it worked fine for me. To better isolate this issue, we can try running the verify and rebuild process. Verifying the data self-identifies data issues within a company file while rebuilding the data resolves data integrity issues.
Click on File at the top menu bar.
Select on Utilities.
Click on Rebuild Data.
Select OK when you see Rebuild has completed.
Once done, you can proceed with verifying the data: