Why does AppSync return null when Lambda returns the correct result?

Hello, I'm trying to create a simple AppSync schema with Lambda query resolver which gets some data from the database. When I run Lambda from the console, everything is perfect and I get the correct result, but when I run it from the AppSync console,...

How do I create new option if there are no left in React-Select?

I need to create new option with label "Ostatni" if there are no options left. I tried to do it by customising MenuList and NoOptionsMessage, but nothing works. Is there any way? I tried it this way NoOptionsMessage = props => ( <components.NoOpt...

Is there any full stack book/resource that explains e-shop development from scratch with common issues or must be done things, database, etc.?

How do I make clear and nice three level list?

Hey! Good UI designers, I beg your for an advice :) I need to transform this ugly three level list into some nice and clear list (doesn't have to be a list). I'm soo bad in graphics and UI design. I have no idea how to make this clear. I use Semanti...

I'm scared about my first job in the future.

I'm a student. In a few days I'll start a university studies. I'm trying to constantly learn something new about Javascript, React, Python, etc.. But I'm scared that I won't be good enough to make a good code or that I'll make some big mistakes. What...