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 ('5ef3004c1b9ac6fde6d507ce4b4e2915', -1, 1715231514, 1715231514, '12bf6670', 7, 0, 0)

Line : 189
File : sessions.php