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 ('6db8d9d5f5d729b4a60ab0fb159ef5cf', -1, 1715153765, 1715153765, '0390a0db', 7, 0, 0)

Line : 189
File : sessions.php