diff --git a/load-app.js b/load-app.js
index 899f73a..09a71e0 100644
--- a/load-app.js
+++ b/load-app.js
@@ -132,7 +132,12 @@ class LeafletElement extends HTMLElement {
 }
 customElements.define('leaflet-map', LeafletElement);
 
-let opfs = await navigator.storage.getDirectory();
+let opfs;
+try {
+  opfs = await navigator.storage.getDirectory();
+} catch(e) {
+
+}
 
 async function init_app() {
     const compilation_error = await show_error;
@@ -180,10 +185,14 @@ async function init_app() {
 
     const send_value_handlers = {
       save: async ({markers}) => {
-        const f = await opfs.getFileHandle(`markers-${map_id}.json`, {create:true});
-        const w = await f.createWritable();
-        await w.write(JSON.stringify(markers));
-        await w.close();
+        try {
+          const f = await opfs.getFileHandle(`markers-${map_id}.json`, {create:true});
+          const w = await f.createWritable();
+          await w.write(JSON.stringify(markers));
+          await w.close();
+        } catch(e) {
+          
+        }
 
         const fd = new FormData();
         fd.set('content', JSON.stringify(markers));