No error handling when a column is empty

[ror-infobeans]

When I select a table from the drop down and add a blank condition to it, there is a 500 server error in the console and the table shows the processing indefinitely. I am attaching a screenshot for the same.

[salk31]

Hi, I'm afraid this project is pretty much abandoned. I need to work out how to make that clear on the front page.