phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO po_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('bd6cf95b41c29fda544c6e47945f58bb', -1, 1755181155, 1755181155, 'd849d820', 35, 0)

Line : 152
File : /home/potaku/public_html/phpBB2/includes/sessions.php