hackerearth smart browser giving this warning before starting the coding test even after closing all the applications.

Error info:
“Following applications should be closed to start the test Please close all the following applications and click on start test Gjs”

os details:
Distributor ID: Ubuntu
Description: Ubuntu 22.04.2 LTS
Release: 22.04
Codename: jammy

Has anyone faced the issue? kindly help