What does the "M96-The work area blocking cylinder is rising abnormally (X26)" error message mean?

This error message indicates that the work area blocking cylinder is rising abnormally. The work area blocking cylinder is typically used to protect the work area from accidentally being
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