No way… while executing time you must have a active user id… so once user logged in succes, save his user id in tinydb so that you can recover it in screen init…
else try this
surely this will work and you wont get any error. if still getting then check your all of your blocks properly icluding project bucket@mustafa_namer
Oh sorry… When media uploaded, save the url in one variable… Finaly use that variable in when clock timer… I have added 123 in value place but there url variable must come… Instead of url i was tested with variable and it works fine