Ready API Maven Plugin causes error when reading Excel file within Groovy script using Apache POI

I have added the ready-api-maven-plugin 1.7 version with pom.xml for Maven2 integration.

  <dependencies>
    <dependency>
      <groupId>org.reflections</groupId>
      <artifactId>reflections</artifactId>
      <version>0.9.9-RC1</version>
      <scope>compile</scope>
    </dependency>
    <dependency>
      <groupId>org.apache.poi</groupId>
      <artifactId>poi</artifactId>
      <version>3.13</version>
      <scope>compile</scope>
    </dependency>
    <dependency>
      <groupId>org.apache.poi</groupId>
      <artifactId>poi-ooxml</artifactId>
      <version>3.13</version>
      <scope>compile</scope>
    </dependency>
    <dependency>
      <groupId>org.apache.poi</groupId>
      <artifactId>poi-scratchpad</artifactId>
      <version>3.13</version>
      <scope>compile</scope>
    </dependency>
  </dependencies>
 <plugin>
   <groupId>com.smartbear</groupId>
   <artifactId>ready-api-maven-plugin</artifactId>
   <version>1.7.0</version>
 </plugin>

Within my ReadyAPI project I have a writen a Groovy script that reads an Excel file using Apache POI libraries.

This project run perfectly fine with Ready API but when integrating with Maven and using pom.xml, I see the below error.

23:53:01,058 ERROR [SoapUI] An error occurred [org/openxmlformats/schemas/spreadsheetml/x2006/main/CTExtensionList], see error log for details
java.lang.NoClassDefFoundError: org/openxmlformats/schemas/spreadsheetml/x2006/main/CTExtensionList
	at java.lang.Class.getDeclaredMethods0(Native Method)

Removed the Groovy code that reads the Excel file and all was good with Maven integration.

I need to read the excel file for some processing and hence need the issue resolved when using Maven and Ready API integration.

Looks like ready-api-maven-plugin seems to have some conflict with apache poi libraries.

Note: adding the ooxml-schemas dependency within pom.xml didn't help either.

Appreciate all help.