phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1114 The table 'phpbb_sessions' is full

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('4e998f037f170b6e7905e15e12bd29b4', -1, 1469433850, 1469433850, '36c625c8', -1, 0, 0)

Line : 187
File : sessions.php