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Thrown by the methods of the String class to indicate that an index is either negative, or greater than the size of the string itself. You are probably using the wrong index when accessing substring of the array.
You need to make sure that capitalisation of the case for the plugin in the properties file is exactly: "AllocinePlugin" and not "allocineplugin"
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java.lang.StringIndexOutOfBoundsException: String index out of range: -1