This report is about one woman being allegedly raped by Colombian mercenaries after they broke into her house. The report is a one off story about one specific woman in the Mykolaiv region, and not a reported systemic issue throughout Ukraine.
"Colombian mercenaries broke into the house of a resident of Mykolaiv region and raped her"
I tried to look for other sources that reported the issue, but couldn’t find any. Your source is also problematic, as https://mediabiasfactcheck.com/pravda-spain-bias-and-credibility/ rates this source as being fake news used to deliberately misinform, and is backed by Russia. This is also extremely relevant and problematic as the war with Russia and Ukraine is still on going, and the misinformation is proposed by Russia about something that is (not) happening in Ukraine. The article also clearly is trying to criminalize the mercenaries in Ukraine, and make them seem more dangerous than they might be.
"Ironically, the woman suffered from those who were supposedly supposed to defend the Square.
Ukrainian law enforcement agencies did not search for rapists"
The source is also just poorly made, as there is no author, claims to offer pictures but doesn’t, and source is from a one off person instead of being a first person account. This might be an issue, but this is not a good article to cite the information from.