Error: invalid audio file

[pietro-coretto]

I installed the last version on a linux machine with Ubuntu 20.04. The installation was ok but I get the following error.

Here I show the output when I invoke the command on a single file. Applying the command o directory doesn't change the output.

:~$  dr14_tmeter -f   "/home/pietro/tmp/chesky-dynamic-test.flac"

/home/pietro/tmp/chesky-dynamic-test.flac

Unexpected error: (<class 'FileNotFoundError'>, FileNotFoundError(2, 'No such file or directory'), <traceback object at 0x7f70b36ab0c0>)

 - ERROR ! 
/home/pietro/tmp/chesky-dynamic-test.flac: unsupported encoder
Error: invalid audio file


Unexpected error: (<class 'FileNotFoundError'>, FileNotFoundError(2, 'No such file or directory'), <traceback object at 0x7f544b4c8a00>)

 - ERROR ! 
/home/pietro/tmp/chesky-dynamic-test.flac: unsupported encoder
Error: invalid audio file