java.lang.NullPointerException

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  • Help me,error info
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  • problem with deployment on tomcat
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    • java.lang.NullPointerException at com.solarmetric.util.app.Prefs.loadSystem(Prefs.java:599) at com.solarmetric.util.app.Prefs.<init>(Prefs.java:59) at com.solarmetric.util.app.Prefs.getContextPrefs(Prefs.java:91) at com.solarmetric.util.app.Prefs.getRequiredString(Prefs.java:134) at com.solarmetric.kodo.runtime.JDOVersion.check(JDOVersion.java:54) at com.solarmetric.kodo.runtime.JDOVersion.checkValid(JDOVersion.java:32) at com.solarmetric.kodo.tools.appid.ApplicationIDTool.<clinit>(ApplicationIDTool.java:50)
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