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 ('ac6150f8246e14f04abd1df103bf9caf', -1, 1714615485, 1714615485, '030f8fb5', 19, 0)

Line : 158
File : sessions.php