diff --git a/backend/code_parser.py b/backend/code_parser.py
index 35b1765..ac1cb0f 100644
--- a/backend/code_parser.py
+++ b/backend/code_parser.py
@@ -23,6 +23,9 @@ def __init__(self, code):
         except SyntaxError as e:
             logging.error(f"SyntaxError: {e}")
             raise
+        except Exception as e:
+            logging.error(f"Unexpected error in CodeParser constructor: {e}")
+            raise
 
     def find_functions(self):
         return [node.name for node in ast.walk(self.tree) if isinstance(node, ast.FunctionDef)]
@@ -65,6 +68,9 @@ def verify_database_connection(self):
     sample_code = "def example():\n    return True"
     parser = CodeParser(sample_code)
     analysis = parser.analyze_code()
-    parser.save_analysis_to_db("sample_code.py", "Code Analysis", str(analysis), None)
+    try:
+        parser.save_analysis_to_db("sample_code.py", "Code Analysis", str(analysis), None)
+    except Exception as e:
+        logging.error(f"Unexpected error in save_analysis_to_db: {e}")
     parser.verify_database_connection()
     print(analysis)
diff --git a/backend/pipeline_manager.py b/backend/pipeline_manager.py
index 1d3a308..56f5504 100644
--- a/backend/pipeline_manager.py
+++ b/backend/pipeline_manager.py
@@ -25,6 +25,9 @@ def autogpt_task(self, task):
                 max_tokens=150
             )
             return response.choices[0].text.strip()
+        except openai.error.AuthenticationError as e:
+            logging.error(f"API key error during autogpt_task: {e}")
+            return "API key error"
         except Exception as e:
             logging.error(f"Error during autogpt_task: {e}")
             return ""
diff --git a/database/models.py b/database/models.py
index 52cc02f..d731dd5 100644
--- a/database/models.py
+++ b/database/models.py
@@ -71,7 +71,7 @@ def verify_component_connections():
         
         # Check modules components
         if not all([AlertsNotifications, APTSimulation]):
-            raise ValueError("Modules component connection check failed")
+            raise ValueError("Modules components connection check failed")
         logging.info("Modules components connection verified.")
         
     except Exception as e: