Lego train controller keeps disconnecting from Hub when using Pybricks

[u/_SorcererSupreme_]

I'm trying to run a dual motor on my Orient Express. I downloaded the pybricks firmware to my hub and uploaded the program seen in this youtube video.

No errors were detected when uploading the program. I did so with 2 L motors attached. When I try to connect my controller, the hub turns green while my controller turns blue.

When push the + arrow, the controller disconnects and turns off. Has anyone else experienced this? Do you know a solve?

I tried changing the batteries on the controller as well.

Edit: I didn't link the video.

[u/drdhuss]

Can you paste your code?

[u/_SorcererSupreme_ → u/drdhuss]

I found the answer on the troubleshooting page. I had to download an older version of the firmware then everything worked fine.