How do I set up the Tomcat server for netbeans on my mac?

I am trying to run a netbeans project that uses a server. However, whenever I run the program I either get a "Starting of Tomcat failed, the server port 8080 is already in use." or a "Starting of Tomcat failed." error. As well as, these errors down below.

java.lang.ClassNotFoundException: org.netbeans.modules.web.monitor.server.MonitorFilter
        at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1358)
        at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1180)
        at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:546)
        at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:527)
        at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:150)
        at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:260)
        at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:106)
        at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4548)
        at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5193)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
        at org.apache.catalina.core.StandardContext.reload(StandardContext.java:3761)
        at org.apache.catalina.startup.HostConfig.reload(HostConfig.java:1395)
        at org.apache.catalina.startup.HostConfig.checkResources(HostConfig.java:1368)
        at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1603)
        at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:304)
        at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:123)
        at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1159)
        at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1381)
        at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1385)
        at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1353)
        at java.lang.Thread.run(Thread.java:745)
05-Apr-2020 20:10:36.349 INFO [ContainerBackgroundProcessor[StandardEngine[Catalina]]] org.apache.catalina.core.ApplicationContext.log SessionListener: contextDestroyed()
05-Apr-2020 20:10:36.349 INFO [ContainerBackgroundProcessor[StandardEngine[Catalina]]] org.apache.catalina.core.ApplicationContext.log ContextListener: contextDestroyed()
05-Apr-2020 20:10:36.669 SEVERE [ContainerBackgroundProcessor[StandardEngine[Catalina]]] org.apache.catalina.core.StandardContext.filterStart Exception starting filter [HTTPMonitorFilter]
    java.lang.ClassNotFoundException: org.netbeans.modules.web.monitor.server.MonitorFilter
        at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1358)
        at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1180)
        at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:546)
        at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:527)
        at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:150)
        at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:260)
        at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:106)
        at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4548)
        at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5193)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
        at org.apache.catalina.core.StandardContext.reload(StandardContext.java:3761)
        at org.apache.catalina.startup.HostConfig.reload(HostConfig.java:1395)
        at org.apache.catalina.startup.HostConfig.checkResources(HostConfig.java:1368)
        at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1603)
        at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:304)
        at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:123)
        at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1159)
        at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1381)
        at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1385)
        at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1353)
        at java.lang.Thread.run(Thread.java:745)