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 ('9b78cd2a5ab4eb14f8dd81750e677615', -1, 1542491207, 1542491207, '365ab978', 9, 0, 0)

Line : 186
File : sessions.php