How do I fix No Airprint printers found HP? {{ currentPage ? currentPage.title : "" }}

I have a HP office jet 4620 and using it for printing document properly. Suddenly I am experiencing No Airprint printers found HP error from a long time. I am so frustrating and worrying, so I am into a big trouble. I have tried all tested and effective troubleshooting steps to sort out this error. But no smile on the face, so it becomes extremely troublesome for me, so please anyone suggest me the quick fixes for this issue.

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