Technical error when attempting to post listing to sell

[mesozoicshop]

I have multiple saved drafts for listings and every time I hit the button to post I get the "We've encountered an issue on our end" page. 

Very frustrating.

[urban_picker]

I get this error almost daily when listing, it's never ending.

[iamonourside]

I got this error repeatedly today. I am able to post but get the error page whenever I choose "view listing" thereafter.