Issue with the simulate function

[Syntoxikoo]

I'm new to python and I don't understand why I run into an issue when I use the room simulation, in all my test with pyroomacosutics I can't run a simulation of the room because of a Value error exeception.
Here a screen off my code and the error.
Can you please help me with that and explain me why it doesn't work ?

[fakufaku]

Hello @Syntoxikoo , I think this can happen if your source signal is stereo for example. You should make sure that all signals provided for sources are mono.