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via GitHub by nolberg
, 1 year ago
java.lang.NullPointerException: 	at org.jgrapht.util.UnorderedVertexPair.hashCode(	at java.util.HashMap.hash(	at java.util.HashMap.get(	at org.jgrapht.graph.specifics.FastLookupUndirectedSpecifics.getEdge(	at org.jgrapht.graph.AbstractBaseGraph.getEdge(	at org.jgrapht.alg.HopcroftKarpBipartiteMatching.symmetricDifference(	at org.jgrapht.alg.HopcroftKarpBipartiteMatching.maxMatching(	at org.jgrapht.alg.HopcroftKarpBipartiteMatching.(