Failed process - invalid character '<' after top-level value @checker

[shirakun]

04 05:02:43.295737 ┇ Sending http://89.109.14.179:60155 @checker
04 05:02:43.295675 ┃ Proxy http://190.108.192.230:58431 @checker
04 05:02:43.296760 ┃ Good proxy http://190.108.192.230:58431 @checker
04 05:02:43.612415 ┇ Response http://197.210.246.30:8080 @checker
04 05:02:43.612855 ┇ Sending http://213.25.46.80:30333 @checker
04 05:02:43.612827 ┃ Proxy http://197.210.246.30:8080 @checker
04 05:02:43.615348 ┃ Not anonymous http://197.210.246.30:8080 @checker
04 05:02:43.615641 ┃ Forwarded for 202.182.107.151 @checker
04 05:02:44.151276 ┇ Response http://176.119.28.41:12345 @checker
04 05:02:44.151679 ┇ Sending http://101.51.141.60:60417 @checker
04 05:02:44.151524 ┃ Proxy http://176.119.28.41:12345 @checker
04 05:02:44.152610 ┣ Unable to unmarshal body from http://176.119.28.41:12345 - invalid character '<' after top-level value @checker
04 05:02:44.154454 ┣ Failed process - invalid character '<' after top-level value @checker
panic: invalid character '<' after top-level value

goroutine 1 [running]:
main.main()
        /root/proxyChecker/checker/main.go:93 +0x169b