What i did / Steps to reproduce

I rendered my local world and moved the web folder to the local server OpenServer. The rendering went without errors, everything is ok in the logs. Start web using OpenServer

Actual result

Render is not displayed correctly.

1. Left menu working with errors:

• human-readable names are not displayed
• settings not load

2. A black area appears when the map approaches
   

3. Blocks are not rendering (only polygons are shown)
   

All errors are displayed in the developer console

Context

BlueMap Version:
3.20-cli-1.20.1

Minecraft client version:
1.20.3

OS
Windows

Browser
Tried Chrome and Firefox

OpenServer version
5.4.3

Please read this to see how to configure your external webserver correctly for bluemap.

If you need support with that, please use our discord, as GitHub is not the correct place for support :)

With built-in webserver from CLI all ok.