Line 15 Ad system domain bidswitch.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 adnxs.com is not the canonical exchange domain. Use appnexus.com instead.
Line 28 adnxs.com is not the canonical exchange domain. Use appnexus.com instead.
Line 29 adnxs.com is not the canonical exchange domain. Use appnexus.com instead.