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 ('51e31009750f6e896d754d2d7e9adeb7', -1, 1715304010, 1715304010, '038579a0', -6, 0, 0)

Line : 189
File : sessions.php