Upstream sub schema is resolved wrong

[n0rad]

When a local schema reference an public schema, it can find it, but when this public schema reference another public one, it's resolved wrong with a mix of local and public path in the lookup.

example:
local.json

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$ref": "https://public.website.com/schema/remote.json"
}

remote.json

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "properties": {
    "test": {
      "$ref": "sub/test.json#/properties/enabled"
    }
  }
}

sub/test.json

{
  "type": "object",
  "properties": {
    "enabled": {
      "type": "boolean",
      "default": false
    }
  }
}

it fails with:

WARNING:root:Error loading schema from uri {/MY/LOCAL/PATH}https://public.website.com/schema/sub/test.json: [Errno 2] No such file or directory: '{/MY/LOCAL/PATH}https://public.website.com/schema/sub/test.json'
Traceback (most recent call last):
  File "/lib/python3.11/site-packages/json_schema_for_humans/schema/intermediate_representation.py", line 377, in _load_schema
    path_part_int = int(path_part)
                    ^^^^^^^^^^^^^^
ValueError: invalid literal for int() with base 10: 'properties'

I tried setting the $id of files to the public URL and tried to give the full URL for sub/test.json $ref, but it does not help