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 ('d2009fbdffef91da596a9858b3e0f894', -1, 1481429007, 1481429007, '32101110', -1, 0, 0)

Line : 187
File : sessions.php