MySQL Error!

The Error returned was:
Table './kaiss791_op/dle_post' is marked as crashed and last (automatic?) repair failed

Error Number:

Warning: Unknown: open(/var/lib/php/session/sess_nuh96g697ukugud7bvaaltss30, O_RDWR) failed: Permission denied (13) in Unknown on line 0 Warning: Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/var/lib/php/session) in Unknown on line 0