Nothing to do with THP.

You were on the trial plan when you deployed MongoDB and thus your volume was limited to 500MB, MongoDB can not happily run with only 500MB, so since upgrading to the Hobby plan for access to 5GB volumes, go into the volumes settings to grow it to 5GB.

Calm down, my friend. I was just exposing the error that the log showed me, I didn't remember the date of deployment of the container, I just searched and saw that it had to do with memory, but I didn't find where I can change that. Thanks for the clarification.