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 ('8f4c2eefd8849e93ee3fee2c9c4adbf0', -1, 1519538559, 1519538559, '365cc552', 66, 0, 0)

Line : 187
File : sessions.php