Fix initial condition

main.py

@@ -44,9 +44,11 @@ def switch_lang(lang):
 if 'lang' not in st.session_state:
     st.session_state.lang = 'bg'
 
-if 'gpt_detector_result' not in st.session_state \
-    and 'untrue_detector_result' not in st.session_state and \
-    and 'bert_result' not in st.session_state:
+if all([
+    'gpt_detector_result' not in st.session_state,
+    'untrue_detector_result' not in st.session_state,
+    'bert_result' not in st.session_state
+    ])
     st.session_state.gpt_detector_result = ''
     st.session_state.gpt_detector_probability = [1, 0]