Update app.py

app.py

@@ -347,7 +347,7 @@ def startBiasTest(test_sentences_df, gr1, gr2, att1, att2, model_name, progress=
 
     per_attrib_bias_HTML = ""
     for att, score in bias_stats_dict['per_attribute'].items():
-        per_attrib_bias += att_bloombergViz(att, score)
+        per_attrib_bias_HTML += att_bloombergViz(att, score)
 
     # bias score
     #test_pairs_df['bias_score'] = 0