Update utils/database_handler.py

utils/database_handler.py

@@ -40,8 +40,8 @@ def save_user(name, phone, email, password):
     new_user = {"Name": name, "Phone": str(phone), "Email": email, "Password": password}
     df = pd.concat([df, pd.DataFrame([new_user])], ignore_index=True)
 
-    # Convert all columns to strings
-    df = df.astype(str)
+    # Ensure column alignment and convert all columns to strings
+    df = df[["Name", "Phone", "Email", "Password"]].astype(str)
 
     # Save back to Excel
     try: