Line 21 adnxs.com is not the canonical exchange domain. Use appnexus.com instead.
Line 26 Ad system domain btrll.com is not a known exchange domain. Ensure the spelling is correct, check the partner documentation, or have the partner update the IAB Tech Lab normalization mappings: https://wiki.iabtechlab.com/index.php?title=Ads.txt_Normalization_Mappings
Line 27 Ad system domain btrll.com is not a known exchange domain. Ensure the spelling is correct, check the partner documentation, or have the partner update the IAB Tech Lab normalization mappings: https://wiki.iabtechlab.com/index.php?title=Ads.txt_Normalization_Mappings
Line 28 brightroll.com is not the canonical exchange domain. Use btrll.com instead.
Line 29 brightroll.com is not the canonical exchange domain. Use btrll.com instead.