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 ('895424d91fd73b5e96d1a57fe4a5e13f', -1, 1713402298, 1713402298, '03901faf', -7, 0, 0)

Line : 187
File : sessions.php