There are 3 image errors with similar problem.
One of them is loaded from https://open-source.kulkul.tech/en_ID/images/Branch-pr.png, which is invalid. And the website corrected itself to https://open-source.kulkul.tech/en_ID/pages/images/Branch-image.png, which is correct.
However, it would be great to make this website as bug-free as possible.
