What is the specific machine model that is generating the error codes M96 and KM-ASSYM3-08?

What type of cylinder is being used in the work area?

Have you tried to reset or reprogram the machine's control system to address the issue?
Check if the cylinder is stuck when rising. If the movement is restricted and the cylinder cannot fully extend, then the error M96-The work area blocking cylinder is rising abnormally (X26) may be caused by