diff --git a/src/backend/langflow/graph/vertex/types.py b/src/backend/langflow/graph/vertex/types.py
index 9c02ef847..17481b8a0 100644
--- a/src/backend/langflow/graph/vertex/types.py
+++ b/src/backend/langflow/graph/vertex/types.py
@@ -225,7 +225,7 @@ class PromptVertex(Vertex):
             # so the prompt format doesn't break
             artifacts.pop("handle_keys", None)
             try:
-                return self._built_object.format(**self.artifacts)
+                return self._built_object.format(**artifacts)
             except KeyError:
                 return super()._built_object_repr()
         else:
diff --git a/src/frontend/src/utils.ts b/src/frontend/src/utils.ts
index 4fc7cb016..d44bdf5e6 100644
--- a/src/frontend/src/utils.ts
+++ b/src/frontend/src/utils.ts
@@ -598,7 +598,7 @@ export function isValidConnection(
       ) ||
     targetHandle.split("|")[0] === "str"
   ) {
-    let targetNode = reactFlowInstance.getNode(target).data.node;
+    let targetNode = reactFlowInstance?.getNode(target)?.data?.node;
     if (!targetNode) {
       if (
         !reactFlowInstance