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 ('125e9b797561ab007c93df4e1eeaaeed', -1, 1715940045, 1715940045, '12767a2e', 15, 0)

Line : 158
File : sessions.php