Solved
Error: "Refusing to install package day/cq60/fd:adobe-aemfd-win-pkg:5.1.100. required dependencies missing: [adobe/cq640/servicepack:aem-service-pkg:6.4.8]"

getting this error, while installing "AEM-FORMS-6.4.8.0-WIN" add on package in 6.4 version.
