The first thing you need to do is request the full report on the administrative violation through the public services portal or in person at the traffic police office. The report should include photos from the scene of the violation, and if those photos actually show the markings are invisible or barely visible, that's already a serious argument for contesting it. The officer was obligated to document an actual violation, not guess about where markings used to be.
At the same time, take your own photos and video of that spot in good weather and daylight - several shots from different angles to show how worn the markings are. If you can, also film it at dusk or under artificial lighting, the way it was when you got the ticket. Here's the key thing: gather evidence right now, because the administration might just repaint the markings, and then your evidence won't look as strong.
When you contest it at the traffic police or in court, submit both sets of photos - the ones from the report and yours. If the official photos show the markings are unreadable, but the report says something like "parked in a no-parking zone," that's a direct contradiction. Judges often side with drivers in situations like this, when the document isn't backed up by actual visual proof of a violation. Your chances are real, but without evidence it gets much harder.