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 ('5034d1effe11b6a5ae16a18eb8b56791', -1, 1748383734, 1748383734, '12743da9', -9, 0, 0)

Line : 190
File : sessions.php