cvc-complex-type.2.4.c: The matching wildcard is strict, but no declaration can be found for element 'jaxrs:server'

I am getting the error when I delpoy app on weblogic server 12.1.3. The error shows on line where "<jaxrs:server>" line exists.

org.xml.sax.SAXParseException; lineNumber: 50; columnNumber: 61; cvc-complex-type.2.4.c: The matching wildcard is strict, but no declaration can be found for element 'jaxrs:server'.:

Here is my cxf-servlet.xml

<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:util="http://www.springframework.org/schema/util"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:jaxws="http://cxf.apache.org/jaxws"
xmlns:soap="http://cxf.apache.org/bindings/soap" xmlns:sec="http://cxf.apache.org/configuration/security"
xmlns:http="http://cxf.apache.org/transports/http/configuration"
xmlns:cxf="http://cxf.apache.org/core" xmlns:jaxrs="http://cxf.apache.org/jaxrs"
xsi:schemaLocation="
		http://www.springframework.org/schema/beans
		http://www.springframework.org/schema/beans/spring-beans-4.1.xsd
		http://www.springframework.org/schema/util 
		http://www.springframework.org/schema/util/spring-util-4.1.xsd
		http://www.springframework.org/schema/tx
		http://www.springframework.org/schema/tx/spring-tx-4.1.xsd
		http://www.springframework.org/schema/context
   		http://www.springframework.org/schema/context/spring-context-4.1.xsd
   		http://cxf.apache.org/jaxws
     	http://cxf.apache.org/schemas/jaxws.xsd
     	http://cxf.apache.org/jaxrs
    	http://cxf.apache.org/schemas/jaxrs.xsd          	
		http://cxf.apache.org/transports/http/configuration  
	    http://cxf.apache.org/schemas/configuration/http-conf.xsd
	    http://cxf.apache.org/core 
     	http://cxf.apache.org/schemas/core.xsd">

<import resource="classpath:META-INF/cxf/cxf.xml" />
<import resource="classpath:META-INF/cxf/cxf-servlet.xml" />
<import resource="cxf-logging.xml" />

   <jaxrs:server id="restContainerBackend" address="/backend">
	<jaxrs:serviceBeans>
		<ref bean="pageframeworkServiceImpl" />
	</jaxrs:serviceBeans>
	<jaxrs:extensionMappings>
		<entry key="json" value="application/json" />
	</jaxrs:extensionMappings>
	<jaxrs:providers>
		<ref bean="jsonProvider" />
	</jaxrs:providers>
</jaxrs:server>
...
... //rest of the xml
</beans>

I am not sure what is wrong with this. Can someone point out please?

Thanks!

cxf-rt-frontend-jaxrs dependency was missing. Adding this dependency the issue got resolved.