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 ('8470e77a5f3c6e9a321828f85eef1909', -1, 1714665506, 1714665506, '030efddd', 15, 0)

Line : 158
File : sessions.php