Fix uncaught promise errors not showing up correctly in logs

js/logging.js

@@ -137,6 +137,6 @@ window.onerror = (message, script, line, col, error) => {
 
 window.addEventListener('unhandledrejection', rejectionEvent => {
   const error = rejectionEvent.reason;
-  const errorInfo = error && error.stack ? error.stack : JSON.stringify(error);
-  window.log.error(`Top-level unhandled promise rejection: ${errorInfo}`);
+  const errorInfo = error && error.stack ? error.stack : error;
+  window.log.error('Top-level unhandled promise rejection:', errorInfo);
 });

js/models/conversations.js

@@ -2210,6 +2210,7 @@
         return;
       }
 
+      try {
         const profileKeyBuffer = window.Signal.Crypto.base64ToArrayBuffer(
           profileKey
         );
@@ -2220,6 +2221,9 @@
           accessKeyBuffer
         );
         this.set({ accessKey });
+      } catch (e) {
+        window.log.warn(`Failed to derive access key for ${this.id}`);
+      }
     },
 
     async upgradeMessages(messages) {