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 ('ef50bdc02ae08c61f2219d7cf6b687d4', -1, 1756541558, 1756541558, 'd849d8b2', 1, 0, 0)

Line : 187
File : sessions.php