Update src/server.cpp

src/server.cpp

@@ -353,9 +353,12 @@ void Server::handle_get_directory(const drogon::HttpRequestPtr& /*req*/, std::fu
     }
     
     // output the labeltags as an array of label:tag pairs
+    // Filter out entries that have no labeltags
     nlohmann::json entries_array = nlohmann::json::array();
     for (const auto& entry : entries) {
-        entries_array.push_back({{"labeltags", entry.labeltags}, {"hash", entry.hash}});
+        if (!entry.labeltags.empty()) {
+            entries_array.push_back({{"labeltags", entry.labeltags}, {"hash", entry.hash}});
+        }
     }
 
     auto resp = drogon::HttpResponse::newHttpResponse();