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= 862d19b374e0a29b&sig= AOD64_3CL5rfHfaT4WH4EpDrtXXWI8QFkw&tbm= shop&source= lnms&ved= 200713&ictx= 111
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