Follow the below steps 

1) Stop the service "DatagapsBIValidatorServer".

2) Check the task manager if any "ServerRepository.exe" exists, end the processes.

2) Rename the "apache-tomcat" folder in the default path "C:\app\Datagaps\BIValidator\Server\" to some thing like "apache-tomcat_old"

3) Extract the new apache tomcat zip and copy the folder "apache-tomcat-9.0.34" in the same path "C:\app\Datagaps\BIValidator\Server\"

(Note: apache-tomcat-9.0.34 is 9.0.34 download version related)

4) Rename the folder name from "apache-tomcat-9.0.34" it to "apache-tomcat". 

5) Copy the "Config" folder from "apache-tomcat_old" it to "apache-tomcat".

6) Open the server.xml in the "apache-tomcat/Conf" folder.

7) Replace the connector port "8080" with "6090" as shown below element.

      <Connector port="8080" protocol="HTTP/1.1" 

               connectionTimeout="20000"

               redirectPort="8443" />

8) Copy the war files (BIValidatorService.war, BIValidatorServices.war) from "C:\app\Datagaps\BIValidator\Server\apache-tomcat_old\webapps" to apache-tomcat\webapps

9) Start the service "DatagapsBIValidatorServer". 

10) Browse the url >> http://localhost:6090/BIValidatorService/ 

Note : If web reporting is not opened when browse the url >> http://localhost:6090/BIValidatorService/ ,  then follow the steps 11 and 12.

11) Go to location C:\app\Datagaps\BIValidator\Server\apache-tomcat\webapps\BIValidatorService\WEB-INF . Open the web.xml file and change the 'param-value' value to 'false' >>

    <init-param>
        <param-name>cors.support.credentials</param-name>
        <param-value>false</param-value>
    </init-param> 

12) Restart the service "DatagapsBIValidatorServer".