fix to open new group when not already exists

extension/background.js

@@ -153,7 +153,9 @@ async function navOpen({ url, background, window: windowName, group: groupNameOr
   }
   const tab = await chrome.tabs.create({ url, active: !background, windowId });
   if (groupNameOrId != null) {
-    const groupId = await resolveGroupId(groupNameOrId);
+    let groupId;
+    try {
+      groupId = await resolveGroupId(groupNameOrId);
       // Close any blank placeholder tabs that were created when the group was made
       const groupTabs = await chrome.tabs.query({ groupId });
       const placeholders = groupTabs.filter(t =>
@@ -162,6 +164,12 @@ async function navOpen({ url, background, window: windowName, group: groupNameOr
       );
       await chrome.tabs.group({ tabIds: [tab.id], groupId });
       if (placeholders.length) await chrome.tabs.remove(placeholders.map(t => t.id));
+    } catch (e) {
+      if (!e.message.startsWith("No tab group found")) throw e;
+      // Group doesn't exist — create it with the tab already in it
+      groupId = await chrome.tabs.group({ tabIds: [tab.id] });
+      await chrome.tabGroups.update(groupId, { title: String(groupNameOrId) });
+    }
   }
   return { id: tab.id, url: tab.url };
 }