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 ('8562fe2fec97a3e8a9b3947b3a24a4e7', -1, 1505873337, 1505873337, '36501a74', 6, 0, 0)

Line : 187
File : sessions.php