Assertion error when running fusesoc simulation

[MoonisAmir10]

Im using ubuntu 18.04 in WLS. When running the command : sudo fusesoc run --target=sim veerwolf, I get the following error:

INFO: Generating ::veerwolf-veer_eh1_default_config:0.7.5
Traceback (most recent call last):
File "/usr/local/bin/fusesoc", line 11, in
load_entry_point('fusesoc==2.2.1', 'console_scripts', 'fusesoc')()
File "/usr/local/lib/python3.6/dist-packages/fusesoc/main.py", line 766, in main
fusesoc(args)
File "/usr/local/lib/python3.6/dist-packages/fusesoc/main.py", line 756, in fusesoc
args.func(cm, args)
File "/usr/local/lib/python3.6/dist-packages/fusesoc/main.py", line 305, in run
args.resolve_env_vars_early,
File "/usr/local/lib/python3.6/dist-packages/fusesoc/main.py", line 436, in run_backend
backend = backend_class(edam=edam, work_root=work_root, verbose=verbose)
File "/usr/local/lib/python3.6/dist-packages/edalize/edatool.py", line 182, in init
loader=PackageLoader(package, "templates"),
File "/usr/local/lib/python3.6/dist-packages/jinja2/loaders.py", line 291, in init
assert loader is not None, "A loader was not found for the package."
AssertionError: A loader was not found for the package.

Any idea on how to fix it?

[olofk]

Hmm... I haven't seen an error like this before. Looking at the error message it seems like there is something strange with the installation of edalize.

Could you try running python -c "import edalize;print(edalize.__package__)" from the terminal? I expect the result to be edalize but from your error message it looks like it will be None.

[MoonisAmir10]

Hmm... I haven't seen an error like this before. Looking at the error message it seems like there is something strange with the installation of edalize.

Could you try running python -c "import edalize;print(edalize.__package__)" from the terminal? I expect the result to be edalize but from your error message it looks like it will be None.

It says: "ImportError: No module named edalize".

[olofk]

Ok, this just gets more and more strange :)
Did you install fusesoc with pip? If so, could you try pip install --upgrade edalize and see if that helps?

[MoonisAmir10]

Ok, this just gets more and more strange :) Did you install fusesoc with pip? If so, could you try pip install --upgrade edalize and see if that helps?

It says that requirement is already satisfied:
Defaulting to user installation because normal site-packages is not writeable
Requirement already satisfied: edalize in /usr/local/lib/python3.6/dist-packages (0.5.1)
Requirement already satisfied: Jinja2>=3 in /usr/local/lib/python3.6/dist-packages (from edalize) (3.0.3)
Requirement already satisfied: MarkupSafe>=2.0 in /usr/local/lib/python3.6/dist-packages (from Jinja2>=3->edalize) (2.0.1)

[cycurain]

**james@james-VirtualBox: /SweRVolf$ fusesoc run --target=nexys_a7 veerwolf
INFO: Generating ::veerwolf-veer_eh1_default_config:0.7.5
Traceback (most recent call last):
File "/home/james/.local/bin/fusesoc", line 11, in
sys.exit(main())
File "/home/james/.local/lib/python3.6/site-packages/fusesoc/main.py", line 766, in main
fusesoc(args)
File "/home/james/.local/lib/python3.6/site-packages/fusesoc/main.py", line 756, in fusesoc
args.func(cm, args)
File "/home/james/.local/lib/python3.6/site-packages/fusesoc/main.py", line 305, in run
args.resolve_env_vars_early,
File "/home/james/.local/lib/python3.6/site-packages/fusesoc/main.py", line 436, in run_backend
backend = backend_class(edam=edam, work_root=work_root, verbose=verbose)
File "/home/james/.local/lib/python3.6/site-packages/edalize/vivado.py", line 93, in init
super().init(edam, work_root, eda_api, verbose)
File "/home/james/.local/lib/python3.6/site-packages/edalize/edatool.py", line 182, in init
loader=PackageLoader(package, "templates"),
File "/home/james/.local/lib/python3.6/site-packages/jinja2/loaders.py", line 291, in init
assert loader is not None, "A loader was not found for the package."
AssertionError: A loader was not found for the package.
james@james-VirtualBox:~/SweRVolf$ python -c "import edalize;print(edalize.package)"
edalize

even install edalize , the error message happen assert loader is not None, "A loader was not found for the package."
I write some print code to get informations in "loaders.py"

package_name: edalize
spec: ModuleSpec(name='edalize', loader=None, origin='namespace', submodule_search_locations=_NamespacePath(['/home/james/.local/lib/python3.6/site-packages/edalize', '/home/james/.local/lib/python3.6/site-packages/edalize', '/usr/local/lib/python3.6/dist-packages/edalize']))
loader: None

Could you help me to resolve the problem, thanks**

[yaanng2022]

I got the same problem ,when I was running python -c "import edalize;print(edalize.package)" ,I got edalize.Can you give me some advice about what I can do to resolve the problem?