phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './tripleac_Forum/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 ('b448abc102eb95436ad94c09db7ca1d2', -1, 1462326465, 1462326465, '365b7eb8', -1, 0, 0)

Line : 187
File : sessions.php