Log errors when failing to save a message to storage

src/headless/converse-chat.js

@@ -1012,7 +1012,7 @@ converse.plugins.add('converse-chat', {
              * @method _converse.ChatBox#createMessage
              */
             createMessage (attrs, options) {
-                return this.messages.create(attrs, Object.assign({'wait': true, 'promise':true}, options));
+                return this.messages.create(attrs, Object.assign({'wait': true, 'promise':true}, options)).catch(e => log.error(e));
             },
 
             /**

src/headless/package.json

@@ -36,7 +36,7 @@
   },
   "gitHead": "9641dcdc820e029b05930479c242d2b707bbe8e2",
   "devDependencies": {
-    "@converse/skeletor": "0.0.2",
+    "@converse/skeletor": "conversejs/skeletor#0f819a4f3ea013b3a48c3fcb600c3138559e1c0d",
     "filesize": "^6.1.0",
     "localforage": "^1.7.3",
     "lodash-es": "^4.17.15",