Run time error java.lang.ClassNotFoundException not found by org.xhtmlrenderer.flying.saucer.pdf.itext5 [613]

 I'm working on the implementation of html to pdf generation, where i have done below pom config,

<dependency>
<groupId>org.xhtmlrenderer</groupId>
<artifactId>flying-saucer-core</artifactId>
<version>9.1.20</version>
</dependency>
<dependency>
<groupId>org.xhtmlrenderer</groupId>
<artifactId>flying-saucer-pdf-openpdf</artifactId>
<version>9.1.20</version>
</dependency>
<dependency>
<groupId>org.xhtmlrenderer</groupId>
<artifactId>flying-saucer-pdf-itext5</artifactId>
<version>9.1.20</version>
</dependency>

<dependency>
<groupId>org.xhtmlrenderer</groupId>
<artifactId>flying-saucer-pdf-osgi</artifactId>
<version>9.1.2</version>
</dependency>
<dependency>
<groupId>org.xhtmlrenderer</groupId>
<artifactId>flying-saucer-core</artifactId>
<version>9.1.20</version>
</dependency>

<dependency>
<groupId>org.xhtmlrenderer</groupId>
<artifactId>flying-saucer-pdf-openpdf</artifactId>
<version>9.1.20</version>
</dependency>
<dependency>
<groupId>org.xhtmlrenderer</groupId>
<artifactId>flying-saucer-pdf</artifactId>
<version>9.1.20</version>
</dependency>

and in plugin I have added this line 

<plugin>
    <groupId>biz.aQute.bnd</groupId>
    <artifactId>bnd-maven-plugin</artifactId>
    <executions>
        <execution>
            <id>bnd-process</id>
            <goals>
                <goal>bnd-process</goal>
            </goals>
            <configuration>
                <bnd><![CDATA[
Export-Package: 
  com.itextpdf;version="5.5.6",\
  com.itextpdf.text;version="5.5.6",\
  com.itextpdf.text.pdf;version="5.5.6",\
  com.lowagie;version="2.1.7",\
  org.xhtmlrenderer;version="9.1.20",\
  org.xhtmlrenderer.pdf.ITextRenderer.*;version="9.1.20",\

The build is fine and the bundle is active. 

In my code I am able to get the apis of ITextRenderer. 

org.xhtmlrenderer.pdf.ITextRenderer iTextRenderer = new org.xhtmlrenderer.pdf.ITextRenderer();

But on Runtime I am getting this exception in error.log.

java.lang.ClassNotFoundException: org.xhtmlrenderer.pdf.ITextRenderer

could you please suggest anyone ?