I already created a view to display metrics of several projects
Create a view through admin --> Configuration --> Views menu, assign projects by regular expression method, then request build from RTC. Expecting to see metrics on new view but getting 'You need to run views calculation after upgrade.’ and ‘No analysis has been performed since creation. The only available section is the configuration.’ messages.
The current version is 7.6 and the current LTS is 6.7.6. You’re going to have a hard time finding support for earlier versions.
That said, it sounds like you need to analyze your projects, and then run views calculation. Note that 7.6 has “live” portfolios, meaning that they’re updated automatically right after an included project or sub-portfolio is updated.