Can’t upload images from frontend

What tool are you using to upload from the front end?

Default wordpress upload. Screen –> https://www.predajto.eu/wp-content/uploads/2019/03/Snímka.png

How are you accessing that from the front end? That’s a back-end screen.

It is not back-end screen –> https://www.predajto.eu/wp-content/uploads/2019/03/Snímka-1.png

What plugin are you using that allows front-end uploads?

It is not the plugin, it is integrated in the theme.

You’re using a commercial theme, flatads, so please use their official support channel. We feel they are best equipped to support their products.

https://themeforest.net/item/flatads-classified-adswordpress-theme/7157644/support

Commercial products are not supported in these forums.

But it is not theme problem, it is wordpress problem. I can’t upload images through default wordpress uploader

From the back end? You’re not being very helpful in your replies. Please go to DASHBOARD -> MEDIA and try to upload a small file.

1. Check that you have available disk space, both in your hosting quota and on the server itself.

2, When you upload a file, does it appear in wp-content/uploads/whatever when you check from FTP or your hosting control panel?

3. Don’t mess with the permissions of WordPress PHP files! What are the permissions on wp-content, wp-content/uploads, and wp-content/uploads/whatever?