Error Message not helpful

[rrayst]

Message:

************** Configuration Error ***********************************

Could not init auth in OAuth2Resource2Interceptor

Reason: java.lang.NullPointerException: Cannot invoke "String.isEmpty()" because the return value of "java.net.URI.getQuery()" is null


Giving up.

Check proxies.xml file for errors.

proxies.xml content:

<spring:beans xmlns:spring="http://www.springframework.org/schema/beans"
              xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
              xmlns="http://membrane-soa.org/proxies/1/" xmlns:lang="http://www.springframework.org/schema/lang"
              xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
                                            http://membrane-soa.org/proxies/1/ http://membrane-soa.org/schemas/proxies-1.xsd http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang.xsd">

    <spring:bean id="propertyPlaceholder" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <spring:property name="systemPropertiesModeName" value="SYSTEM_PROPERTIES_MODE_OVERRIDE"/>
        <spring:property name="ignoreResourceNotFound" value="true"/>
        <spring:property name="locations">
            <spring:list>
                <spring:value>file:/file.properties</spring:value>
            </spring:list>
        </spring:property>
    </spring:bean>

    <router>

        <internal name="ms">
            <log body="true" />
            <target host="login.microsoftonline.com"><ssl/></target>
        </internal>

        <api port="80">
            <path>/grafana</path>
            <setHeader name="X-Forwarded-Proto" value="https" />
            <oauth2Resource2>
                <membrane src="internal://ms/${TENANT_ID}/v2.0" clientId="${CLIENT_ID}"
                    clientSecret="${GRAFANA_CLIENT_SECRET}" scope="openid" subject="oid">
                </membrane>
            </oauth2Resource2>
            <target host="demo-backend" />
        </api>

    </router>

</spring:beans>

what is the problem? - no way to find out.