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 ('8b2cb565741278509adf5a2e6000e23a', -1, 1513559354, 1513559354, '36a33d42', 13, 0, 0)

Line : 186
File : sessions.php