Critical error while submitting new listing

My site is displaying critical error whenever a user want to add a new listing. It shows upon pressing the submit button, then, when press the submit button again, it creates the new listing suceesfully. What could be the issue ?

The first click on submit button gives critical error and the second click works well.

Thanks.

• This topic was modified 2 years, 3 months ago by Toheeb Temitope.