Docker is not running when trying to create a Laravel application

I am starting with Laravel and I am following the installation guide from the official website . So I had to install Docker with this guide . When I run the last command it works fine

sudo docker run hello-world

Then, following the guide on the Laravel site, I run the command:

curl -s https://laravel.build/example-app  | bash

to create a Laravel application as it said. But when I do so it doesn't work and this message appears:

is not running.

The output of systemctl status docker

● docker.service - Docker Application Container Engine
   Loaded: loaded (/lib/systemd/system/docker.service; enabled; vendor preset: enabled)
   Active: active (running) since Wed 2021-03-24 09:55:07 EDT; 6min ago
     Docs: https://docs.docker.com 
 Main PID: 1445 (dockerd)
    Tasks: 13
   CGroup: /system.slice/docker.service
           └─1445 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock

Mar 24 09:55:06 wrrnrtm-A320M-HD2 dockerd: time="2021-03-24T09:55:06.568086445-04:00" level=warning msg="Your kernel does not support CPU realtime scheduler"
Mar 24 09:55:06 wrrnrtm-A320M-HD2 dockerd: time="2021-03-24T09:55:06.568093668-04:00" level=warning msg="Your kernel does not support cgroup blkio weight"
Mar 24 09:55:06 wrrnrtm-A320M-HD2 dockerd: time="2021-03-24T09:55:06.568100040-04:00" level=warning msg="Your kernel does not support cgroup blkio weight_device"
Mar 24 09:55:06 wrrnrtm-A320M-HD2 dockerd: time="2021-03-24T09:55:06.568236866-04:00" level=info msg="Loading containers: start."
Mar 24 09:55:07 wrrnrtm-A320M-HD2 dockerd: time="2021-03-24T09:55:07.227307787-04:00" level=info msg="Default bridge (docker0) is assigned with an IP address 172.17.0.0/16. Daemon option --bip can be used to set a preferred IP address"
Mar 24 09:55:07 wrrnrtm-A320M-HD2 dockerd: time="2021-03-24T09:55:07.501565370-04:00" level=info msg="Loading containers: done."
Mar 24 09:55:07 wrrnrtm-A320M-HD2 dockerd: time="2021-03-24T09:55:07.551553136-04:00" level=info msg="Docker daemon" commit=363e9a8 graphdriver(s)=overlay2 version=20.10.5
Mar 24 09:55:07 wrrnrtm-A320M-HD2 dockerd: time="2021-03-24T09:55:07.551881250-04:00" level=info msg="Daemon has completed initialization"
Mar 24 09:55:07 wrrnrtm-A320M-HD2 systemd[1] : Started Docker Application Container Engine.
Mar 24 09:55:07 wrrnrtm-A320M-HD2 dockerd: time="2021-03-24T09:55:07.578162675-04:00" level=info msg="API listen on /var/run/docker.sock"

I have no idea what I'm doing wrong. I'm using Xubuntu 18.04