Micro Job listing not saving and error message

Please help on Micro Job submission page.

I just created a freelancing site at – https://yokebay.com/freelancing/.
But the problem is, when a freelancer creates a job listing, it will fist show up an “error” message; then the “saving your changes. This may take a few minutes, please wait…..” just stick to the screen as shown in the attached image.
Please I need help to resolve this.