upd

app.py

@@ -91,8 +91,8 @@ def text_generate(prompt, generated_txt): #, input_prompt_sql ): #, input_prompt
   if len(new_prompt) == 0:
     temp_text = display_output[::-1]
     print(f"What is the last character of sentence? : {temp_text[0]}")
-    if temp_text[0] == '.':
-      first_period_loc = temp_text[1:].find('.')
+    if temp_text[1] == '.':
+      first_period_loc = temp_text[2:].find('.')
       print(f"Location of last Period is: {first_period_loc}")
       new_prompt = display_output[-first_period_loc:]
       print(f"Not sending blank as prompt so new prompt for next cycle is : {new_prompt}")