quick fix

app/services/oauth2.js

@@ -330,6 +330,18 @@ class OAuth2Service extends SiteService {
     return clients;
   }
 
+  async getRandomClients (maxCount) {
+    const clients = await OAuth2Client.aggregate([
+      {
+        $match: { 'flags.isActive': true },
+      },
+      {
+        $sample: { size: maxCount },
+      }
+    ]);
+    return clients;
+  }
+
   async getClientById (clientId) {
     const client = await OAuth2Client
       .findOne({ _id: clientId })