502 errors can be related to temporary network or DNS issues. If it works using the calendar URL but not the custom one, it might be a temporary error in the ...
Missing: aclk&sca_esv= 2012520a95282aaf&sig= AOD64_3uwJ6Qng17AG5NFZ3Ae8pCZpAOsQ&tbm= shop&source= lnms&ved= 200713&ictx= 111
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