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 ('965ae85e09e04a0a51c74ebc917f5df9', -1, 1714384203, 1714384203, '12dd8113', -9, 0)

Line : 158
File : sessions.php