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 ('af9422f5c6707c4e85f10dc415211db5', -1, 1524138435, 1524138435, '1714f5c0', -11, 0, 0)

Line : 187
File : sessions.php