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 ('fdb8fc091e6f9ed890e03c3bde9e1d1e', -1, 1490743811, 1490743811, '36a6551d', -1, 0, 0)

Line : 189
File : sessions.php