Global configuration is defined in an assembly that is not refrenced

Hi,
I need to use the Signed version of the DLL, so I have followed the steps in this link Please add strong names to Hangfire assemblies to sign the dll manually.

Once after I signed and got the new dll, I get this exception “IGlobalConfiguration is defined in an assembly that is not referenced”. I have tried to fix this as given in the following link but that was not successful.

Can you guys guide me how to fix this issue?