phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('6caa1d619772d95787ad716d3e93547d', -1, 1715217940, 1715217940, '030c47ed', -1, 0, 0)

Line : 189
File : sessions.php