I am getting above error in nopcommerce 3.80.
full error i.e. : "Could not load file or assembly 'EPPlus, Version=4.0.4.0, Culture=neutral, PublicKeyToken=ea159fdaa78159a1' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)"
I surprise that why this type of error is showing, because this EPPLUS.dll already has been given reference to my project with the suitable version i.e. 4.0.4.0.
And also showing this dll in project bin folder.
Then also showing this error.