Unable to Query Salesforce & Database : Action Could not be empty

Unable to Query Salesforce & Database : Action Could not be empty

Hello,
I am facing an issue while trying to Parse Salesforce or Database. 
Skyvia returns the error “Action could not be empty,” while using "Execute Query or Execute command"

Could you please advise what could be causing this issue?
If this is a known or newly discovered bug, any workaround or patch information would be appreciated.

Thank you
Nouha