Ajuda erro 500

Programação Java
#1

galera, me ajudem com o erro… tv funcionando perfeitamente

HTTP Status 500 -

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: Wrapper cannot find servlet class br.com.onbudget.componentes.logicaNegocios.ControllerServlet or a class it depends on
	org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
	org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
	org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849)
	org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
	org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454)
	java.lang.Thread.run(Thread.java:619)

root cause

java.lang.ClassNotFoundException: br.com.onbudget.componentes.logicaNegocios.ControllerServlet
	org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1387)
	org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1233)
	org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
	org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
	org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849)
	org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
	org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454)
	java.lang.Thread.run(Thread.java:619)

note The full stack trace of the root cause is available in the Apache Tomcat/6.0.20 logs.

a classe ta mapeada corretamente no web.xml

<servlet>
        <servlet-name>ControllerServlet</servlet-name>
        <servlet-class>br.com.onbudget.componentes.logicaNegocios.ControllerServlet</servlet-class>
#2