java.lang.NumberFormatException: null

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You try to parse a String that contains non-numeric characters to an int. The string must contain decimal characters only, optionally beginning with a + or - sign.

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java.lang.NumberFormatException: null
at java.lang.Integer.parseInt(Integer.java:542)
at java.lang.Integer.parseInt(Integer.java:615)
at de.ifgi.lod4wfs.core.GlobalSettings.refreshSystemVariables(GlobalSettings.java:265)
at de.ifgi.lod4wfs.web.Start.main(Start.java:30)

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