Session not launched after authentication. Errors in Logs

[vikigenius]

After my most recent system update, I can no longer login using this theme.

Here are the error logs:

file:///usr/share/lightdm-webkit/themes/glorious/js/authenticate.js:167:15: CONSOLE LOG Start authentication
undefined:1:12: CONSOLE JS ERROR ReferenceError: Can't find variable: show_prompt
ASSERTION FAILED: vm.currentThreadIsHoldingAPILock()
../Source/JavaScriptCore/runtime/VM.cpp(1347) : void JSC::sanitizeStackForVM(JSC::VM&)
ERROR: 0x7f475f4f9000 - [pageProxyID=6, webPageID=7, PID=825] WebPageProxy::processDidTerminate: (pid 825), reason 3
../Source/WebKit/UIProcess/WebPageProxy.cpp(7330) : void WebKit::WebPageProxy::resetStateAfterProcessTermination(WebKit::ProcessTerminationReason)
ERROR: 0x7f475f4f9000 - [pageProxyID=6, webPageID=7, PID=825] WebPageProxy::dispatchProcessDidTerminate: reason=3
../Source/WebKit/UIProcess/WebPageProxy.cpp(7384) : void WebKit::WebPageProxy::dispatchProcessDidTerminate(WebKit::ProcessTerminationReason)

I enter my password successfully, then the screen just becomes black with a mouse cursor. It does not start my default session, window manager (BSPWM)