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 ('8ccce1a0ed58dcba2543b5c19dd4c087', -1, 1542231571, 1542231571, '36a712aa', -4, 0, 0)

Line : 187
File : sessions.php