fix errors 2

app.py

@@ -101,11 +101,11 @@ if 'files' in state and "annotator" in state:
 
 else:
     st.info("Everything annotated.")
-
-st.info(f"Annotated: {len(state.annotations)}, Remaining: {len(state.files)}")
-
-st.download_button(
-    "Download annotations as CSV",
-    "\n".join([f"{k}\t{v}" for k, v in state.annotations.items()]),
-    file_name="annotations_faithfull.csv",
-)
+if 'annotations' in state and 'files' in state:
+    st.info(f"Annotated: {len(state.annotations)}, Remaining: {len(state.files)}")
+
+    st.download_button(
+        "Download annotations as CSV",
+        "\n".join([f"{k}\t{v}" for k, v in state.annotations.items()]),
+        file_name="annotations_faithfull.csv",
+    )