phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './explicit/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 ('230d3d39c2f8e266e04fd2afa182d681', -1, 1414091480, 1414091480, '36a74b9b', 11, 0, 0)

Line : 187
File : sessions.php