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https://praveenkumarsreeram.com/2017/03/12/sitecore-xp1-on-azure-trouble-shooting-appgallery-deploy-failed-system-argumentexception-missing-mandatory-parameters-for-valid-shared-access-signature/
Sitecore XP1 on Azure – Trouble Shooting - AppGallery Deploy Failed: 'System.ArgumentException: Missing mandatory parameters for valid Shared Access Signature