change adapter static

svelte.config.js

@@ -3,10 +3,12 @@ import adapter from '@sveltejs/adapter-static';
 /** @type {import('@sveltejs/kit').Config} */
 const config = {
 	kit: {
-		// adapter-auto only supports some environments, see https://svelte.dev/docs/kit/adapter-auto for a list.
-		// If your environment is not supported, or you settled on a specific environment, switch out the adapter.
-		// See https://svelte.dev/docs/kit/adapters for more information about adapters.
-		adapter: adapter()
+		adapter: adapter({
+			fallback: '404.html'
+		}),
+		paths: {
+			base: process.argv.includes('dev') ? '' : process.env.BASE_PATH
+		}
 	}
 };