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 ('a5ec6217b3df9e2c78c2c4f43ab67b18', -1, 1715038857, 1715038857, '0390d491', -9, 0, 0)

Line : 189
File : sessions.php