The Analyze Template Option will be executed automatically before you save a template back in your Dynamcis 365 system with the latest version of the DocumentsCorePack Client (9.37 or higher). Additionally it can be executed on demand while designing a template by calling it from theTemplate Explorer window.
The warnings are just an information and no actual errors. False positve can occur but can be simply ignored.
You can turn this feature of by disabling this functionality. How to disable this is describe here: Template Explorer Settings
Details ab the functionality will be added shortly to this blog article, so please check again in a few days.