phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './mediest_phpbb/phpbb_sessions' is marked as crashed and should be repaired

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('0e914e32f2aa496eeab8f2e17fdf5223', -1, 1414812983, 1414812983, '365a998d', 2, 0, 0)

Line : 187
File : sessions.php