Please do not post text in images:
Why should I not upload images of code/data/errors when asking a question?
Put your code, commands, output, error messages as text between lines with triple backticks:
```
Your text will be here.
```
Now what I noticed in your images:
- We do not see how you created the table
classroom
so we cannot say why is the column missing. - Do not use
format()
, f-strings etc. to insert values into SQL commands. These methods create SQL-injection vulnerabilities. If the tutorial does not say that this approach wrong then it is a bad tutorial.
How to use placeholders to bind values in SQL queries