Exception Thrown: java.lang.ArrayIndexOutOfBoundsException: Index -1 out of bounds for length 8
java.lang.ArrayIndexOutOfBoundsException: Index -1 out of bounds for length 8
	at HashTableMap.containsKey(HashTableMap.java:112)
	at BaseGraph.insertNode(BaseGraph.java:60)
	at Backend.loadGraphData(Backend.java:76)
	at WebApp.createWorkingFrontend(WebApp.java:135)
	at WebApp.handleSingleResponse(WebApp.java:211)
	at WebApp.main(WebApp.java:52)