Did you set this proxy or is it part of browsec ?
FF NetworkProxy: "ftp", "127.0.0.1"
FF NetworkProxy: "ftp_port", 49736
FF NetworkProxy: "no_proxies_on", "localhost, localdomain, .localdomain, local, .local, 127.0.0.1, 10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16,
www.google-analytics.com"
FF NetworkProxy: "ssl", "127.0.0.1"
FF NetworkProxy: "ssl_port", 49736
FF NetworkProxy: "type", 4