phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './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 ('14912c91f74054e6857378a54d120ef3', -1, 1490456491, 1490456491, '369ebb76', -1, 0, 0)

Line : 187
File : sessions.php