Ugly error for nonexisting file

[vargenau]

File foo.spdxdoes not exist.
Running:

pyspdxtools -i foo.spdx

results in the ugly error below.
Only the last line telling that the file does not exist should be displayed.

Traceback (most recent call last):
  File "/opt/homebrew/bin/pyspdxtools", line 8, in <module>
    sys.exit(main())
             ^^^^^^
  File "/opt/homebrew/lib/python3.11/site-packages/click/core.py", line 1157, in __call__
    return self.main(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/lib/python3.11/site-packages/click/core.py", line 1078, in main
    rv = self.invoke(ctx)
         ^^^^^^^^^^^^^^^^
  File "/opt/homebrew/lib/python3.11/site-packages/click/core.py", line 1434, in invoke
    return ctx.invoke(self.callback, **ctx.params)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/lib/python3.11/site-packages/click/core.py", line 783, in invoke
    return __callback(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/lib/python3.11/site-packages/spdx_tools/spdx/clitools/pyspdxtools.py", line 61, in main
    document: Document = parse_file(infile)
                         ^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/lib/python3.11/site-packages/spdx_tools/spdx/parser/parse_anything.py", line 25, in parse_file
    return tagvalue_parser.parse_from_file(file_name)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/lib/python3.11/site-packages/spdx_tools/spdx/parser/tagvalue/tagvalue_parser.py", line 10, in parse_from_file
    with open(file_name) as file:
         ^^^^^^^^^^^^^^^
FileNotFoundError: [Errno 2] No such file or directory: 'foo.spdx'

[armintaenzertng]

Thanks for the input, @vargenau! :)
I opened #777 to fix this.