Hi,

This comes when you are using Apache httpclient and this library is not available in the project.

If you download the org.apache.httpcomponents httpclient jar file and include in your project, then the problem will be solved.

In maven use the following dependency:

<dependency>
    <groupId>org.apache.httpcomponents</groupId>
    <artifactId>httpclient</artifactId>
    <version>4.5.2</version>
</dependency>

Thanks