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 ('44bac5f85f0d83a5187d3669a62829f5', -1, 1747909710, 1747909710, '12768cba', 2, 0, 0)

Line : 190
File : sessions.php