phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './socal_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 ('601a5e5f12a856be9f7c0832324c281a', -1, 1438496226, 1438496226, 'b95de50a', 12, 0, 0)

Line : 187
File : sessions.php