Bugfix: show 'unknown' if distance can't be computed

fillmorle/app.py

@@ -420,8 +420,8 @@ def format_feedback(frame_feedback):
     for fdb in frame_feedback:
         out.append({
             "Story": fdb["frame"],
-            "Similarity (Event)": f"{fdb['similarity_1']:.2f}",
-            "Similarity (Thing)": f"{fdb['similarity_2']:.2f}",
+            "Similarity (Event)": f"{fdb['similarity_1']:.2f}" if fdb["similarity_1"] else "unknown",
+            "Similarity (Thing)": f"{fdb['similarity_2']:.2f}" if fdb["similarity_2"] else "unknown",
             "Typical Context": fdb["typical_sentence"],
             "Typical Words": " ".join(fdb["typical_words"])
         })