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 ('2cdf8372dee66e5d7739d029377e0457', -1, 1715162963, 1715162963, '03916c09', -4, 0, 0)

Line : 189
File : sessions.php