phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './private_phpb1/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 ('002333c2dd761f462052cb2e3e321cf6', -1, 1398355660, 1398355660, '36d38ab4', 3, 0, 0)

Line : 187
File : sessions.php