phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('b17ebc1ab942d6bf2243138cf4023426', -1, 1713419529, 1713419529, '12778b3b', -10, 0, 0)

Line : 187
File : sessions.php