After computer resume: Something went wrong

Every day I wake up my computer (resume from sleep) I get the following message in vertabelo.com in the schema editor:

Oops we've got a problem. Something went wrong... [Reload page]

What's even worse, when I click "reload page", I'm taken back to the list of schemas (URL: /drive) and have to re-open the schema I was working on.

This is annoying.