I faced the same issue and I was able to solve the issue by replacing the edgeDriver with the driver supported by the system.
Step 1: Open edge and find the version 
Step 2: Navigate to Microsoft Edge WebDriver - Microsoft Edge Developer
Step 3: Find the compatible driver and download 
Step 4: Replace the edgeDiver under Katalon_Studio_Windows_64-6.1.2\Katalon_Studio_Windows_64-6.1.2\configuration\resources\drivers\edgedriver
Step 5: Restart Katalon.
I hope this will fix your issue. happy testing:-)