phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './grom_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 ('f61847ef9a8fc458167ebc0fb536609d', -1, 1490688939, 1490688939, '369eb7bc', 0, 0, 0)

Line : 189
File : sessions.php