Hi Ilya,
This looks like a CSP configuration issue on the Mendix Community website rather than an issue with your image.
The browser creates a temporary blob: URL when previewing the selected image, but the current img-src policy appears not to allow blob: URLs, so Chrome blocks it.
This likely needs to be fixed by the Community platform team by allowing blob: in the img-src CSP directive. As a temporary workaround, you can try another browser or refresh the page and upload again.
Kindly mark this as the accepted answer if it helps.