for almost two day I have been not able to practice linux CLI lab cause the lab is not working with me is not even loading the lab so wish if you try to help me with this issue
Sorry for your frustration. We get so used to online experiences being fairly seamless, but remote desktops are not always so amenable.
I just tested now, and I can access the lab:
Can you provide a screenshot of the error(s) you are seeing?
Troubleshooting:
1.) Try using a clean new browser. So if you use Chrome, install Firefox, and if you use Firefox, install Chrome. The idea is to use a browser free of any plugins.
2.) If you have antivirus, you might disable the web protections while you are using the lab, or whitelist https://app.cybrary.it/ if you can.
3.) If you are using a VPN, you may want to disable it while using the labs.
4.) If you are using a wireless connection, try a hard wired connection if one is available to you.
5.) If you are using a proxy, try accessing the lab from a non-proxied connection.
6.) If all else fails, try rebooting both your desktop/laptop and your internet router.