phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1194 Table '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 ('390d418525aa40dde53a3e756df3b7c8', -1, 1472422701, 1472422701, '3651e5a5', -1, 0, 0)

Line : 172
File : sessions.php