The new version of Spine introduces a bug with Defold where meshes is not seen but Defold doesn’t give a error message. This happens because that Spine have changed the entry {“type”: “skinnedmesh”} for {“type”: “weightedmesh”}.
The workaround is to open the json file and rename all the type tags.
@Martin_Dahlin said that: “You can revert to an older version directly inside Spine by going to Settings > Version > Other”