String Index out of range: -6 "Unable to start application [KS7.0]

I am not able to record, spy or execute any script in Katalon Studio 7.0.4. 1st time I am seeing this error, I have uninstalled reinstalled Appium but no luck. Only report plugin is running and no Analytics checked.

My configuration details are:

KS 7.0.4
Appium 1.15.1
Xcode 11.0
iPhone 6s
iOS 13.1.3


regards
Satish Kumar Pal