What is the meaning of M95 and X21 machine codes in KM-ASSYM5-02?

What is the cause of the blocking cylinder abnormal descent in the work area?

How can this error be resolved using the provided machine code?

Does this error
The solution for M95- Abnormal descent of blocking cylinder in work area (X21) error involves checking the hydraulic cylinder, adjusting the screws and bushings, replacing or repairing the worn parts,