It it okay? My answer is "Yes, but..."
Yes: The purpose of citations is to point the the information you used in creating your own work, to source your ideas and link your work with the larger body of thought on a topic. For example, it's entirely possible that your paper will primarily/exclusively have citations to non-academic literature. To use one of my papers as an example, in it's 11 citations it has:
- One Blog
- One National Public Radio transcript
- Two popular press articles
- One fan-maintained Wiki
- One fan-maintained data scraping website
- One software documentation document
- One semi-popular press book
- Three academic citations, three of which appear at the end of the document
Clearly that's not exclusively non-academic citations, but there's a lot there that's not a conventional citation, and that's okay.
But... : It is highly unusual for there to be nothing that touches on your topic, even in the broadest form - a review, a paper that suggests this as a way forward, a paper identifying a gap that might be filled with your work, etc.
I would take a long, hard look at your paper and topic and make sure you haven't missed anything. But if the answer, after that self-examination, is "No, this is it" then that is what it is.