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 ('9fbfc13f4d3a2a08d8271d528d2dbea4', -1, 1501224820, 1501224820, '369e1992', -4, 0, 0)

Line : 187
File : sessions.php