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 ('f2dddf2b4b5639c7ec54419a6f50c008', -1, 1516700778, 1516700778, '36ea0002', 5, 0, 0)

Line : 187
File : sessions.php