Intel RealSense T265: serialException

Hello, I’m trying to install the Intel RealSense T265 camera following the official guide from Ardupilot website. I have problem when running the code I’m using an Intel NUC and it is already running Mavlink router , which means that I can connect to it with MP from the GCS. Once I run the aforementioned python script it gives me the following error: serialException: device reports readiness to read but returned no data (device disconnected or multiple access on port?)

I tried to stop Mavlink router and the error doesn’t arise anymore: the problem now is that I can’t anymore connect to the drone with MP (it says “connection failed”) to find the VISION_POSITION_ESTIMATE messages.

Do you have any idea?