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 ('18b0db8c6a08230a2795468d0fd5e0e2', -1, 1527183818, 1527183818, '36a6f50a', 12, 0, 0)

Line : 187
File : sessions.php