phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('26c7aee44458e7ba0b110d36b82c5574', -1, 1730431986, 1730431986, '127782b9', -1, 0, 0)

Line : 195
File : sessions.php