Image upload with URL error handling

[GaroGabriel]

Description

When I'm trying to add an image by URL, I'm setting the not valid URL, for example, -> eeeeeeeeee . I'm getting an error in the console.

Steps to Reproduce

1. Open Insert/edit image.
2. In Source input, write eeeeeeeeee
3. Click Outside of input.

Expected Behavior

Need to catch errors and handle them.

Actual Behavior

I can`t catch the error. To prevent and show warning modal.

Screenshot

Additional Information

• Operating System: macOS Sonoma 14.0
• Browser: Google Chrom Version 118.0.5993.117
• Version: tinymce: "6.7.2"