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) VALUES ('4350839e5bc219006c939c0c8d8d31ec', -1, 1714313806, 1714313806, '1276019e', 18, 0)

Line : 158
File : sessions.php