I am learning Jmeter use id=2172797 appid=b6907d289e10d714a6e88b30761fae22 and now Unable to read data from uploaded .csv file getting error message like ; Response code: Non HTTP response code: java.net.URISyntaxException under Jmeter.
Added screen for your reference.
Please help me. Thanks

Double check your
${id}and${appid}variable values using Debug Sampler and View Results Tree listener combination, the error you're getting most probably indicates that both variables are not resolved into their values and$is an illegal character in the HTTP Request URL PathCheck out How to Debug your Apache JMeter Script article to learn more about troubleshooting JMeter tests