Fix #157 and fix #167

src/app/components/SourcePanel.tsx

@@ -75,6 +75,7 @@ export function SourcePanel({ lang, name, model, blockStates, doCopy, doDownload
 			model?.reset(data, false)
 		} catch (e) {
 			onError(`Error importing: ${message(e)}`)
+			console.error(e)
 		}
 	}
 

src/app/schema/renderHtml.tsx

@@ -186,7 +186,7 @@ export const renderHtml: RenderHook = {
 			}
 		}
 		const body = <>
-			{(typeof value === 'object' && !(node.optional() && value === undefined)) &&
+			{(typeof value === 'object' && value !== null && !(node.optional() && value === undefined)) &&
 				Object.entries(getActiveFields(path))
 					.filter(([_, child]) => child.enabled(path))
 					.map(([key, child]) => {