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 ('3b64c08cccc73b9c1698bf6c71749c57', -1, 1713540773, 1713540773, '12dea31f', -4, 0, 0)

Line : 187
File : sessions.php