Maps and geojson

Today I saw that the maps I had as geojson stopped working in version 0.52.8 and I don't understand why. The format hasn't changed and when I generate a new map with valid geojson it gives me the same error.

The GeoJSON URL returned an invalid content type.

Hi! What's size of your GeoJSON file?

We encountered the same problem and found that new versions of the metabase support JSON up to 5MB. But we have a file that is about 32MB.

We have different geojson, the smallest is 800 kb but it doesn't load either.
:unamused: