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    Expert tip

    Take a look at this blog post on how to set up Grid2 https://goo.gl/rxzbE6. A user related (in the email group on the source) that using older selenium libs solves this exception.

java.lang.NullPointerException: null key in entry: null=TaxaDist{taxaWithRead=0, totalDepth=0, maxTaxa=13, []} at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:235) at com.google.common.collect.ImmutableMap.entryOf(ImmutableMap.java:143) at com.google.common.collect.ImmutableMap$Builder.put(ImmutableMap.java:182) at net.maizegenetics.analysis.gbs.v2.DiscoverySNPCallerPluginV2.createReferenceTag(DiscoverySNPCallerPluginV2.java:385) at net.maizegenetics.analysis.gbs.v2.DiscoverySNPCallerPluginV2.findAlleleByAlignment(DiscoverySNPCallerPluginV2.java:266) at net.maizegenetics.analysis.gbs.v2.DiscoverySNPCallerPluginV2.lambda$null$65(DiscoverySNPCallerPluginV2.java:179)