phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './mw_phpbb/phpbb_mw_sessions' is marked as crashed and should be repaired

INSERT INTO phpbb_mw_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('b3cf81b49238e35e37d3e21bd56b0f31', -1, 1490652936, 1490652936, '36cd99c0', 26, 0, 0)

Line : 187
File : sessions.php