我朋友开发的项目，为什么到我这里就会报这个错误，并且我看网上的解决方法都解决不了，用maven配置的

java.lang.IllegalArgumentException: Properties file not found in classpath: config.properties

at com.jfinal.kit.Prop.<init>(Prop.java:60)

at com.jfinal.kit.PropKit.use(PropKit.java:64)

at com.jfinal.kit.PropKit.use(PropKit.java:38)

at com.sys.JFConfig.configConstant(JFConfig.java:23)

at com.jfinal.core.Config.configJFinal(Config.java:51)

at com.jfinal.core.JFinal.init(JFinal.java:63)

at com.jfinal.core.JFinalFilter.init(JFinalFilter.java:49)

at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:279)

at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:260)

at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:105)

at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4659)

at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5281)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)

at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1408)

at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1398)

at java.util.concurrent.FutureTask.run(FutureTask.java:266)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

at java.lang.Thread.run(Thread.java:745)