No EDMX diagram generated after “EF designer with Database” wizard

[sudhirdehade]

@kenjiuno @roji
Added the datasource and opened the postgres DB in server explorer window of VS 2017.
Now I am creating "EF designer with database".

Navigation Path:::::
Solution Explorer : Models(Folder): Add : New Item : ADO.NET Entity Data Model : EF Designer From Database : New Connection

After creating this, it should generate "entity data model diagram" as expected but It does not show any error and no diagram generated in the .edmx file. As no diagram generated it shows lots of "reference missing" errors.

• EntityFramework6.npgsql (Added using NuGet)
• DDEX also Added using NuGet
  *Npgsql version:
  
• Operating system: windows 10
• Visual Studio Community 2017

Other details about my project setup:
Previously I have EDMX generated from MS SQL Server on the same project which works fine. I have not changed anything in that project.

[sudhirdehade]

@kenjiuno @roji Do You have anything to say???

[roji]

I'm sorry I don't have any time to help with VSIX/EDMX issues at the moment, but it's very odd that you have Npgsql 3.0.8 in your programs list...

[sudhirdehade]

Dont you have any solution or suggestions over it

[roji]

As I wrote above, my first suggestion would be to remove the old version of Npgsql that's somehow installed in parallel with the new one. In fact, I'd uninstall all versions, make sure that there's no Npgsql in your GAC, and reinstall the latest version, to try to have a clean state.

[roji]

Closing as no response was given, this is likely a result of having some old version of Npgsql installed, messing up the dependency loading etc.