Exception: Invalid icon name "json" in font "mdi"

[kaloyanm]

Description

What steps will reproduce the problem?

1. Install the python3.8 binary from python.org
2. Run the powershell and install spyder with pip3
3. Run spyder3
4. Go to the files tab and navigate to any folder (doubleclick to enter)
5. The crash message appears

Traceback

  File "c:\users\kaloy\appdata\local\programs\python\python38\lib\site-packages\spyder\plugins\explorer\widgets\explorer.py", line 136, in icon
    icon = ima.get_icon_by_extension_or_type(fname,
  File "c:\users\kaloy\appdata\local\programs\python\python38\lib\site-packages\spyder\utils\icon_manager.py", line 438, in get_icon_by_extension_or_type
    icon_by_extension = icon(LANGUAGE_ICONS[extension], scale_factor)
  File "c:\users\kaloy\appdata\local\programs\python\python38\lib\site-packages\spyder\utils\icon_manager.py", line 403, in icon
    return qta.icon(*args, **kwargs)
  File "c:\users\kaloy\appdata\local\programs\python\python38\lib\site-packages\qtawesome\__init__.py", line 150, in icon
    return _instance().icon(*names, **kwargs)
  File "c:\users\kaloy\appdata\local\programs\python\python38\lib\site-packages\qtawesome\iconic_font.py", line 302, in icon
    parsed_options.append(self._parse_options(specific_options,
  File "c:\users\kaloy\appdata\local\programs\python\python38\lib\site-packages\qtawesome\iconic_font.py", line 352, in _parse_options
    prefix, chars = self._get_prefix_chars(names)
  File "c:\users\kaloy\appdata\local\programs\python\python38\lib\site-packages\qtawesome\iconic_font.py", line 383, in _get_prefix_chars
    raise Exception(error)
Exception: Invalid icon name "json" in font "mdi"

Versions

• Spyder version: 4.1.5
• Python version: 3.8.6
• Qt version: 5.12.9
• PyQt5 version: 5.12.3
• Operating System: Windows 10

Dependencies

# Mandatory:
atomicwrites >=1.2.0           :  1.4.0 (OK)
chardet >=2.0.0                :  3.0.4 (OK)
cloudpickle >=0.5.0            :  1.6.0 (OK)
diff_match_patch >=20181111    :  20200713 (OK)
intervaltree                   :  None (OK)
IPython >=4.0                  :  7.18.1 (OK)
jedi =0.17.1                   :  0.17.1 (OK)
nbconvert >=4.0                :  6.0.6 (OK)
numpydoc >=0.6.0               :  1.1.0 (OK)
paramiko >=2.4.0               :  2.7.2 (OK)
parso =0.7.0                   :  0.7.0 (OK)
pexpect >=4.4.0                :  4.8.0 (OK)
pickleshare >=0.4              :  0.7.5 (OK)
psutil >=5.3                   :  5.7.2 (OK)
pygments >=2.0                 :  2.7.1 (OK)
pylint >=1.0                   :  2.6.0 (OK)
pyls >=0.34.0;<1.0.0           :  0.35.1 (OK)
qdarkstyle >=2.8               :  2.8.1 (OK)
qtawesome >=0.5.7              :  1.0.0 (OK)
qtconsole >=4.6.0              :  4.7.7 (OK)
qtpy >=1.5.0                   :  1.9.0 (OK)
sphinx >=0.6.6                 :  3.2.1 (OK)
spyder_kernels >=1.9.4;<1.10.0 :  1.9.4 (OK)
watchdog                       :  None (OK)
zmq >=17                       :  19.0.2 (OK)

# Optional:
cython >=0.21                  :  None (OK)
matplotlib >=2.0.0             :  None (OK)
numpy >=1.7                    :  None (OK)
pandas >=0.13.1                :  None (OK)
scipy >=0.17.0                 :  None (OK)
sympy >=0.7.3                  :  None (OK)

[yw5aj]

+1 - I have the same issue.

[ccordoba12]

Hey @kaloyanm, thanks for reporting. This bug was fixed in spyder-ide/qtawesome#155.

@dalthviz is preparing a new release now of that package (1.0.1). He'll close this issue once that release is in PyPI (later today). Thanks for your patience.

[ccordoba12]

This should be fixed now by running

pip install -U qtawesome