Update app.py

app.py

@@ -60,7 +60,7 @@ def extract_pdf_text(uploaded_file):
     return "".join(page.extract_text() or "" for page in pdf_reader.pages).strip()
 
 def get_questions(prompt, input_text, num_questions=3, max_retries=10):
-    model = genai.GenerativeModel('gemini-2.0-flash-lite')
+    model = genai.GenerativeModel('gemini-1.5-flash-latest')
 
     if "previous_questions" not in st.session_state:
         st.session_state["previous_questions"] = set()
@@ -168,7 +168,7 @@ for param in HR_PARAMETERS_CONFIG:
 # SUmmary of improvement(function)
 
 def generate_improvement_suggestions():
-    model = genai.GenerativeModel('gemini-2.0-flash-lite')
+    model = genai.GenerativeModel('gemini-1.5-flash-latest')
     difficulty_level = st.session_state.get("difficulty_level_select", "Beginner")
     level_string = difficulty_level.lower()
 
@@ -254,7 +254,7 @@ def generate_improvement_suggestions():
 
 
 def evaluate_answers():
-    model = genai.GenerativeModel('gemini-2.0-flash-lite')
+    model = genai.GenerativeModel('gemini-1.5-flash-latest')
     # difficulty_level_select is the key for the difficulty selectbox in your sidebar
     difficulty_level = st.session_state.get("difficulty_level_select", "Beginner") 
     level_string = difficulty_level.lower()