I was in one of our neighbouring west african sister nations before the borders were closed, however I had to urgently come back to Nigeria as I was at risk of being stranded financially, I found some way of getting through the border and back to Nigeria but the problem is this, when I was going to the country I was stamped in but when I left I wasn't stamped out and there's the possibility that I could have an interview at the embassy of one of the EU nations here in Nigeria. My question is this, with my passport having a stamp in but no stamp out, would this situation be a problem if I go to an embassy here in Nigeria for an interview?

Hmm

Some embassies don't go through your passport pages , the only problem I see here is the country u visited might be counting u as illegal immigrant still living in their country , with hemp of fines waiting for u when next u visit , that's if the country's system is working