Execution "not working" via UiPath Assistant

ok @LamaX can you do one thing like in the new update many of the fellow member are facing that type of problem.as per the solution is go to orchestrator remove the machine and add that same machine again that it will generate client ID and client Secret copy that and paste it to the assistant where are you running your unattended bot. now your are good to go to run your process again. and before doing that if this happen in type into or any ui activity kindly enable the simulate/send window from the property panel of that activity.