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 ('4d73fe508eca6add36d26395b75deb81', -1, 1519174846, 1519174846, '36e2fd22', -4, 0, 0)

Line : 211
File : sessions.php