CloudLinux Manager's installation wizard shows an unhandled exception when PHP is not installed

Symptoms

When attempting to access CloudLinux Manager's installation wizard, the following error is displayed.

Traceback (most recent call last):
  File "/opt/alt/python37/lib/python3.7/site-packages/clwizard/wizard.py", line 94, in run
    self._get_initial_status()
  File "/opt/alt/python37/lib/python3.7/site-packages/clwizard/wizard.py", line 255, in _get_initial_status
    for module_name, cls in self._supported_modules.items()
  File "/opt/alt/python37/lib/python3.7/site-packages/clwizard/wizard.py", line 255, in <dictcomp>
    for module_name, cls in self._supported_modules.items()
  File "/opt/alt/python37/lib/python3.7/site-packages/clwizard/modules/php.py", line 154, in initial_status
    for it in self._php_interpreters_list():
TypeError: 'NoneType' object is not iterable

Description

"CloudLinux Manager" expects at least one EasyApache PHP version to be installed.

Workaround

1. Log into WHM as the 'root' user.
2. Navigate to "Home / Software / EasyApache 4."
3. Click the "Customize" button in the "Currently Installed Packages" box.
4. Click "PHP Versions."
5. Select at least one PHP version to install.
6. Click "Review."
7. Verify the packages to be installed.
8. Click the "Provision" button.
9. Once the installation completes, click the "Done" button.