I'm having issues deploying a wsp component, from my solution in VS2015, to my Sharepoint 2016 site. I get the error in the title.
However, when I look in Sharepoint 2016 Central Administration -> System Settings -> Farm Management -> Manage Farm solutions -> , it shows that it is deployed. I retracted myWSP and began the process again, thinking it may be sharepoint not updating and the same thing happen ie not deploying from VS2015 but having status 'Deployed' in central administrator.
Looking at Sharepoint Designer, the files in myWSP are not there so it follows that it did not deploy. So why does central administration show that it is?
My basic problem is I can't deploy from visual studio. I have deployed from this before but it's not deploying now. I tried recycling services in IIS and deploying from SharePoint 2016 Management Shell:
Install-SPSolution -identity myWSP.wsp -GACDeployment
Nothing I've tried is working. What am I doing wrong?