Folder Permissions denied with Nitro
This could be because you are setting your Settings → Assets → your volume File System Path to an absolute location outside the VM.
Create an alias (or hard-set webroot) using:
'aliases' =&gt; [
    'webroot' =&gt; dirname(__DIR__) . '/web'
],

In your config/general.php (changing web if you have a different public root).
With this in place, change the File System Path of your volume to @webroot/your/path which should solve you issue.