I cannot see the webpage correctly external to the local machine

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Hi,
I have Lychee running under docker in my umbrel server on port 8000.
For example: APP_URL: http://192.168.1.54:8000, where that IP address is my LAN IP for the server,
localhost:8000 does not work, all I see is blurred images and thumbnails.

Also, I i try to access the page by doing port forwarding (8000) on my domain to that server/port, I get the same blurred images.
Even if I make APP_URL:http://mydomain:8000 still the blurred images.
How do I get this to work and have remote access? ..

In diagnoses I have the following:
warning
/c/uploads/ has permissions 0755, but should have 0775
warning
/age/tmp/jobs/ has permissions 0750, but should have 0775
warning
/a*******ge/tmp/uploads/ has permissions 0750, but should have 0775

Not sure if that is important, and/or how to fix ..