What I would do. I would disassemble the hot end.
You can use this link to follow the steps : https://ultimaker.com/en/resources/22188-how-to-replace-the-tfm-coupler
You need to clean the leaked PLA in the fan shroud. In fact you need to clean all the leaked PLA on your hot end. Make sure you assemble your printer correctly, this is quite important to have successful prints in the future again. And change your nozzle with a new one. (heat up your nozzle to a least 200C before changing it)
When you don't have a spare nozzle available, you can try the atomic pull (check this link : https://ultimaker.com/en/resources/19510-how-to-apply-atomic-method )
And let us know if this worked out for you.
Good luck, don't hesitate to ask for extra help.
There are probably more "senior" members available here to give you more tips.
Thanks for the help.
My printer is working fine now and took all my prints were successful.
But want to inform you the same issue is occurring in many printers in India. Don't know what's the issue but printers like one or two weeks old printer are struggling with this issue.