DotCover.sh not working in Linux for dll.

Hello, 

I have used the command for executing a dll using DotCover using the following command in windows.

dotcover dotnet --StartInstance=1 --output=WebAppDLL.html --ReportType=HTML -- exec “pathToDll”

I am trying the same in Linux using Dotcover.sh after downloading command line installer for linux-x64

./dotCover.sh dotnet --StartInstance=1 --output=WebAppDLL.html --ReportType=HTML -- exec pathto.dll

But it gives me error.

The command could not be loaded, possibly because:
  * You intended to execute a .NET application:
      The application '/opt/jetbrains/dotCover.dll' does not exist.
  * You intended to execute a .NET SDK command:
      No .NET SDKs were found.

Download a .NET SDK:
https://aka.ms/dotnet/download

Learn about SDK resolution:
https://aka.ms/dotnet/sdk-not-found

[JetBrains dotCover] Coverage instance exited with exit code: 145

Can someone please help me regarding this?