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https://www.sinanbozkus.com/handler-%e2%80%9cpagehandlerfactory-integrated%e2%80%9d-has-a-bad-module-%e2%80%9cmanagedpipelinehandler%e2%80%9d-in-its-module-list/
Handler “PageHandlerFactory-Integrated” has a bad module “ManagedPipelineHandler” in its module list