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 ('312e9bad23ea1ef6100db7565a3f558c', -1, 1526934963, 1526934963, '36c45659', -1, 0, 0)

Line : 186
File : sessions.php