Better gRPC reflection errors

src-tauri/src/lib.rs

@@ -134,6 +134,12 @@ async fn cmd_grpc_reflect(
     let req = get_grpc_request(&window, request_id)
         .await
         .map_err(|e| e.to_string())?;
+    
+    // Short-circuit if no URL is set
+    if req.url.is_empty() {
+        return Ok(Vec::new());    
+    }
+    
     let uri = safe_uri(req.url.as_str());
     if proto_files.len() > 0 {
         grpc_handle