FileNotFoundException: Could not load file or assembly 'System.Drawing.Common, Version=4.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51'.

[deanilvincent]

Summary of the issue

I had an issue similar to this dll error: #40

So followed your steps in fixing by installing EPPlus.Core (1.5.2) and created a gdiplus.dll same to this #40 (comment)

Now the error has been changed to

FileNotFoundException: Could not load file or assembly 'System.Drawing.Common, Version=4.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51'. The system cannot find the file specified.

Environment

The in-use version: 1.5.2
Operating system:
Development Env: Windows 10 and the package is working.
Production Env: Ubuntu 16.04 (This is where the problem appears after I published my app)
IDE: Visual Studio 2017

Example code/Steps to reproduce:

Output:

Exception message: FileNotFoundException: Could not load file or assembly 'System.Drawing.Common, Version=4.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51'. The system cannot find the file specified.

[VahidN]

I suggest start using the original EPPlus, because it now supports .NET Standard 2 too:
https://www.nuget.org/packages/EPPlus/4.5.0.2-rc

Also If you want to use the current package, install the last version (1.5.4) and then update your System.Drawing.Common dependency. This official package has 3 updates now:
https://www.nuget.org/packages/System.Drawing.Common/

[deanilvincent]

I was using version 1.5.4 though. But the error was something similar to Unable to load DLL 'libdl'

[VahidN]

v1.5.4 doesn't use the last System.Drawing.Common by default. Try to add or update this dependency.
Also about Unable to load DLL 'libdl' error in containers, they are suggesting:

• Install libgdiplus and libc6-dev in your container (If you're on Ubuntu or Debian, you can try to install the libc6-dev package to get libdl.so).
• Check /usr/lib/x86_64-linux-gnu/libdl.so file exists inside your container.
• If it still fails, you can try setting LD_LIBRARY_PATH to $LD_LIBRARY_PATH:/usr/lib/x86_64-linux-gnu but that should be included already.
• If that still fails, you can set the LD_DEBUG environment variable to libs in your Dockerfile, restart your container.

[deanilvincent]

Thank you @VahidN

I fixed mine by installing the following:

• v1.5.4
• apt-get install libc6-dev until I successfully see the libdl.so