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python - ProgrammingError: SQLite objects created in a thread can only be used in that same thread

i'm fairly new to programming. I've tried MySQL before, but now it's my first time using SQLite in a python flask website. So maybe I'm using MySQL syntax instead of SQLite, but I can't seem to find the problem.

Piece of my code: 

@app.route('/register', methods=['GET', 'POST'])
def register():
    form = RegisterForm(request.form)
    if request.method=='POST' and form.validate():
        name =  form.name.data 
        email = form.email.data
        username = form.username.data
        password = sha256_crypt.encrypt(str(form.password.data))

        c.execute("INSERT INTO users(name,email,username,password) 
        VALUES(?,?,?,?)", (name, email, username, password))

        conn.commit

        conn.close()

The error:
 File "C:Usersapp.py", line 59, in register c.execute("INSERT INTO users(name,email,username,password) VALUES(?,?,?,?)", (name, email, username, password))
 ProgrammingError: SQLite objects created in a thread can only be used in that 
 same thread.The object was created in thread id 23508 and this is thread id 
 22640

Does this mean I can't use the name, email username & password in an HTML file? How do I solve this?

Thank you.

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Where you make your connection to the database add the following.

conn = sqlite3.connect('your.db', check_same_thread=False)

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