Want to remove default Javascript Error response content

[#1]

Hi, Currently i am getting below response if any javaScript Error occured in my proxy. I want to remove/Customize this response message.

{"fault":{"faultstring":"Execution of target-ca-response failed with error: Javascript runtime error: \"ReferenceError: \"logger\" is not defined. (target_ca_response_js#47). at line 47 \"","detail":{"errorcode":"steps.javascript.ScriptExecutionFailed"}}}

No policy seems working after getting this error. i also tried to put my policy under <FaultRules> tag. but that also didn't work for me.

Suggest me a solution.

Details:

Applied in proxy end point:

<FaultRules>
        <FaultRule name="invalid_key_rule">
            <Step>
                <Name>Error500</Name>
                <Condition>(message.status.code = 500)</Condition>
            </Step>
        </FaultRule>
    </FaultRules>

Error500 railsefault policy

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<RaiseFault async="false" continueOnError="false" enabled="true" name="Error500">
    <DisplayName>Error500</DisplayName>
    <FaultRules/>
    <Properties/>
    <FaultResponse>
        <Set>
            <StatusCode>500</StatusCode>
            <ReasonPhrase>Server Error</ReasonPhrase>
           <Payload contentType="text/plain">Error Occured</Payload>
        </Set>
      <Remove>
       {message.content}
       {error.content}
        {error}
        <Payload contentType="application/json">{request.content}</Payload>
        <Payload contentType="application/json"></Payload>
        <Payload contentType="application/json">{message.content}</Payload>
        <Payload contentType="application/json">{error.content}</Payload>
      </Remove>
    </FaultResponse>
    <IgnoreUnresolvedVariables>true</IgnoreUnresolvedVariables>
</RaiseFault>