Plugin failed to load because module could not be loaded - OS Error

I built UE4.27.0 from source. Everything runs fine. But if I want to use two plugins (already built) it throws the following error:

2021.08.23-21.16.25:625][  0]LogCore: Warning: dlopen failed: cannot open shared object file: No such file or directory
[2021.08.23-21.16.25:625][  0]LogModuleManager: Warning: ModuleManager: Unable to load module '/home/username/pluginlocation/Plugins/PluginName2/Binaries/Linux/' because the file couldn't be loaded by the OS.

I found something with LD_LIBRARY_PATH but I did not get it working. Any suggestions?

I’m on Linux and I’ve just built successfully the 4.27 version.
What plugins are your trying to enabled ?