Help with broken .dae files

Hey everyone!

So for a project I am doing I am trying to get a URDF description of the myCobot 280 PI. I found the urdf descriptions made by the company on GitHub (Github folder with urdf descriptions and dae files), however it turns out that two of the .dae files are broken. After some inspection, it turns out that these dae files (joint1_pi.dae and joint5.dae, for those who are interested) are described using polygons whereas the others are described using triangles.

Now probably, for using it in the companies own ROS environment this doesn't matter because they can run it fine. However I am trying to use the urdf in other software/viewers (eventually I am planning on using it in NVIDIA IsaacSim), and so far the viewers I have been using are unable to visualize these two links. Loading this into meshLab does make the points appear, so clearly the information of the model is in that file.

So my question; does anyone know how to convert these dae files that make use of polygon descriptions to dae files using triangles or stl files? I have tried exporting them differently using MeshLab which didn't work, and I am very new within the whole URDF and ROS stuff so I might be looking over something.

Thank you!