Data Source is empty

Hello, I deleted some unused apps and ever since my table dont load anymore in my used Apps. Sometimes the content is there and with the next reload it says data scource is empty although the db is there and accessible. Does anybody know what could be the error?

Many thanks!

If the query set as a Data source for the component is set to run only when manually triggered, the data source will be empty until we run it. Could you share the settings of your query?