Execution of request failed error

Hello all, 

I have searched the forum, but was not necessarily able to find a useful fix for the “Execution of failed error” even though I tried all offered remedies. 

Could anyone know a stable answer for the following errors?

Thanks in advance,

Cihan.

Edit:
The client also and constantly gives the error in the last screen shot and it is not “temporary!” All settings are smoothly set.