Do you have an idea how many? How do you know or quantify it if so?

I run a private node and haven't seen any logs for failures. I'm pretty well connected IMO but I honestly don't know if I miss out on zaps or not. I get some but I figure my notes just aren't worth zapping. 

 You can see by looking at the fetched invoices, those rarely fail. Of course it’s possible that the person decided not to pay, but I know for a fact that some fail after people letting me know 🐶🐾🫡 

 Okay cool. I use lnbits for my lnurlp backend and it shows when invoices are requested and when they don't fulfill.

I just don't get zapped often then 😄 thanks 

 JUST TRIED TO ZAP YOU AND IT FAILED FWIW 

 Thanks. I'll do some testing and maybe try opening some more channels.