title: How do I fix not null constraints error on flutter?
body: <p>I have an db which has two table: note and category. There is a schema below for my tables. I want to insert a record to the note table but I'm getting this error below. Can anyone please help?
  <a href="https://i.stack.imgur.com/0YSn3.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/0YSn3.png" alt="enter image description here" /></a></p>
  <p>Here is the method I create for insert a record to note table and the error which I'm getting from this process.</p>
  <p><a href="https://i.stack.imgur.com/12QKa.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/12QKa.png" alt="enter image description here" /></a></p>