Unhandled exception (78454c65)

Zeus version:
`1.5.2.21b875`

Firefox version:
`(57, 0)`

Geckodriver version:
`geckodriver-v0.19.0-linux64.tar.gzgeckodriver-v0.19.0-linux64.tar.gz`

Error info:
```Traceback (most recent call last):
File "/home/tibb/Zeus-Scanner/var/search/selenium_search.py", line 268, in parse_search_results
tor=tor, batch=batch, xforward=forward_for
File "/home/tibb/Zeus-Scanner/var/search/selenium_search.py", line 80, in get_urls
ff_display = Display(visible=0, size=(800, 600))
File "/home/tibb/.local/share/virtualenvs/zeus-scanner-PMA6y4Ym/lib/python2.7/site-packages/pyvirtualdisplay/display.py", line 34, in __init__
self._obj = self.display_class(
File "/home/tibb/.local/share/virtualenvs/zeus-scanner-PMA6y4Ym/lib/python2.7/site-packages/pyvirtualdisplay/display.py", line 52, in display_class
cls.check_installed()
File "/home/tibb/.local/share/virtualenvs/zeus-scanner-PMA6y4Ym/lib/python2.7/site-packages/pyvirtualdisplay/xvfb.py", line 38, in check_installed
ubuntu_package=PACKAGE).check_installed()
TypeError: __init__() got an unexpected keyword argument 'url'
```

Running details:
`Linux-5.7.17.a-1-hardened-x86_64-with-glibc2.2.5`

Commands used:
`./zeus.py -r -D`

Log file info:
```2020-08-28 18:04:51,459;zeus-log;INFO;log file being saved to '/home/tibb/Zeus-Scanner/log/zeus-log-9.log'
2020-08-28 18:04:51,460;zeus-log;INFO;specified to use non-default search engine
2020-08-28 18:04:51,461;zeus-log;INFO;using random dork 'inurl:default.php?loc=' as the search query
2020-08-28 18:04:51,461;zeus-log;WARNING;only pulling URLs with GET(query) parameters (to pull all URL's pass -E)
2020-08-28 18:04:51,462;zeus-log;INFO;attempting to gather query URL
2020-08-28 18:04:51,462;zeus-log;INFO;setting up virtual display to hide the browser
2020-08-28 18:04:51,462;zeus-log;ERROR;selenium_search.pyc failed to gather the URL from search engine, caught exception '__init__() got an unexpected keyword argument 'url'' exception has been logged to current log file
Traceback (most recent call last):
File "/home/tibb/Zeus-Scanner/var/search/selenium_search.py", line 268, in parse_search_results
tor=tor, batch=batch, xforward=forward_for
File "/home/tibb/Zeus-Scanner/var/search/selenium_search.py", line 80, in get_urls
ff_display = Display(visible=0, size=(800, 600))
File "/home/tibb/.local/share/virtualenvs/zeus-scanner-PMA6y4Ym/lib/python2.7/site-packages/pyvirtualdisplay/display.py", line 34, in __init__
self._obj = self.display_class(
File "/home/tibb/.local/share/virtualenvs/zeus-scanner-PMA6y4Ym/lib/python2.7/site-packages/pyvirtualdisplay/display.py", line 52, in display_class
cls.check_installed()
File "/home/tibb/.local/share/virtualenvs/zeus-scanner-PMA6y4Ym/lib/python2.7/site-packages/pyvirtualdisplay/xvfb.py", line 38, in check_installed
ubuntu_package=PACKAGE).check_installed()
TypeError: __init__() got an unexpected keyword argument 'url'

2020-08-28 18:04:55,241;zeus-log;INFO;Zeus got an unexpected error and will automatically create an issue for this error, please wait
2020-08-28 18:04:55,241;zeus-log;INFO;getting authorization
2020-08-28 18:04:55,242;zeus-log;INFO;extracting traceback from log file
2020-08-28 18:04:55,243;zeus-log;INFO;attempting to get firefox browser version
```