Wro4j filter works locally but not on Weblogic

[Paul Kelly]

I have configured wro4j in my Spring web app

pom.xml

<dependency>
  <groupId>ro.isdc.wro4j</groupId>
  <artifactId>wro4j-core</artifactId>
  <version>1.8.0</version>
</dependency>

web.xml

<filter>
  <filter-name>WebResourceOptimizer</filter-name>
  <filter-class>ro.isdc.wro.http.WroFilter</filter-class>
</filter>
<filter-mapping>
  <filter-name>WebResourceOptimizer</filter-name>
  <url-pattern>/*</url-pattern>
</filter-mapping>

It works when I'm launching locally on my machine but not when I deploy it to a remote Weblogic server. I get the following types of errors

"ro.isdc.wro.WroRuntimeException: Cannot build valid CacheKey from request: /shop/logo.png"

"ro.isdc.wro.WroRuntimeException: No such group available in the model: headerView"

Seems that weblogic can't pick up the paths of the resource files defined in my wro.xml or something

<?xml version="1.0" encoding="UTF-8"?>
<groups xmlns="http://www.isdc.ro/wro" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.isdc.ro/wro wro.xsd">

  <group name="main">
    <css>/resources/css/example/example.css</css>
  </group>

</groups>

Anyone have any idea what could be happening here?