tika app.jar does not convert the plain test to document (pdf) in jmeter

I am facing this issues even though after adding the .jar file in the lib directory still the expected outcome is not there hre is the question

Response data tab this error message has displayed "Missing tika-app.jar in classpath. Unable to convert to plain text this kind of document.Download the tika-app-x.x.jar file from http://ift.tt/xf1INK"

How do i solve this issues And put the file in /lib directory