[Python] Form causes an unsupported media format error

I'm working on a todo app for a class project and the /add_todo route returns a 415 error code whenever I try to add a todo.

@app.route("/add-todo", methods=["GET", "POST"])
def add_todo():
title = request.get_json().get("title")
db.session.add(Todo(title=title))
db.session.commit()
return '', 204


<form action="/add-todo" method="post" hx-boost="true">
<input type="text" id="todo_bar">
<button id="submit">Add</button>
</form>


I've tried everything from changing what the route returns to adding the methods array when declaring the route, yet nothing seems to make a difference.

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