Exception Thrown: java.util.NoSuchElementException
java.util.NoSuchElementException
	at HashtableMap.get(HashtableMap.java:126)
	at BaseGraph.insertEdge(BaseGraph.java:131)
	at Backend.loadGraphData(Backend.java:57)
	at WebApp.createWorkingFrontend(WebApp.java:116)
	at WebApp.handleSingleResponse(WebApp.java:172)
	at WebApp.main(WebApp.java:47)