Hi, the error i got is the one here
My code is about a 4 bit counter that must be connected to a STM32F411 and a ST-LINK, but before that i was told that i had to simulate the outputs to see that everything was fine, i was able to debug the code earlier but i tried the code a day later on a different pc (i saved all files on google drive then tested them )and that message popped up, when i got to the previous pc the error popped again and i don't know why, my configuration is the next one: and as for the code this is the one i did , i think it has something to do with that systick library but as i said that X at the first line wasn't there before so i tried watching youtube videos for problems related to this one but none could help me, what can i do? (It's Keil uvision5)