fixed local variables

app.py

@@ -209,6 +209,7 @@ def dataframeProcessing(dataset):
     df['lemma_tokens'] = df['lemmas_back_to_text'].apply(tokenize)
 
     # Create a id2word dictionary
+    global id2word 
     id2word = Dictionary(df['lemma_tokens'])
 
     # Filtering Extremes
@@ -239,6 +240,8 @@ def dataframeProcessing(dataset):
                                                             step=1)
 
     k_max = max(coherence_values)
+
+    global num_topics
     num_topics = coherence_values.index(k_max) + 2
 
     lda_model = gensim.models.ldamodel.LdaModel(corpus=corpus,