removed initial error from frontend

app.py

@@ -9,13 +9,14 @@ classifier = t.pipeline("zero-shot-classification",
 
 x = st.text_input("Enter your title here:")
 
-candidate_labels = ['anger', 'sadness', 'fear', 'joy', 'interest',
-                    'surprise', 'disgust', 'shame', 'guilt', 'compassion', 'other']
-output = classifier(x, candidate_labels)
-st.write(str(output))
+if x != "":
+    candidate_labels = ['anger', 'sadness', 'fear', 'joy', 'interest',
+                        'surprise', 'disgust', 'shame', 'guilt', 'compassion', 'other']
+    output = classifier(x, candidate_labels)
+    st.write(str(output))
 
-df = pd.DataFrame(dict(r=output['scores'], theta=output['labels']))
-fig = px.line_polar(df, r='r', theta='theta', line_close=True)
-fig.update_traces(fill='toself')
+    df = pd.DataFrame(dict(r=output['scores'], theta=output['labels']))
+    fig = px.line_polar(df, r='r', theta='theta', line_close=True)
+    fig.update_traces(fill='toself')
 
-st.plotly_chart(fig)
+    st.plotly_chart(fig)