Update app.py

Corrected API key variable

app.py

@@ -29,7 +29,7 @@ class BasicAgent:
         # self.google_search_tool = GoogleSearchTool()
         # self.agent = CodeAgent(model = self.llm_model, tools = [self.google_search_tool])
         # Define Google API client with GoogleSearch tool
-        self.client = genai.Client(api_key="GEMINI_API_KEY")
+        self.client = genai.Client(api_key=GEMINI_API_KEY)
 
         
         print("BasicAgent initialized.")