title: Error: Received unknown parameter: business_type - Node Stripe Connect
body: <p>So I am trying to create a Stripe Connect account using a Firestore trigger function (onUpdate), but I keep getting the error: <code>Error: Received unknown parameter: business_type</code> in my Firebase Function logs. 
  This makes me feel like I have poorly formatted the <code>stripe.accounts.create()</code> call. I followed the <a href="https://stripe.com/docs/api/accounts/create?lang=node" rel="nofollow noreferrer">Stripe docs here</a>. I got it working if I just include the values <code>type</code>, <code>country</code>, and <code>email</code>, but would like to include all important values right off the bat, but maybe I have to update other values after the account is created by stripe? If so is there a way to update these more values in the <code>function(error, account)</code> call below? Not a whole lot of example code I can find for this, so if anyone has worked with this and has some tips that would be great! </p>
  
  <p><strong>Snippet:</strong></p>
  
  <pre><code>const response = await stripe.accounts.create({ 
    type: 'custom',
    country: 'US',
    // Optional Values
    requested_capabilities: ['platform_payments'],
    email: newValue.email,
    // tos_acceptance: newValue.stripeTosAcceptance,
    business_type: 'individual',
    individual: {
      //some other options values we could include (see docs)
      // address? Gender? default currency? verification docs?
      first_name: newValue.firstName,
      last_name: newValue.lastName,
      ssn_last_4: newValue.ssnLast4,
      dob: {
        day: newValue.dob.day,
        month: newValue.dob.month,
        year: newValue.dob.year
      }
    },
  }, function(error, account) {
    if(error){
      console.log("Error: " + error);
    } else {
      console.log("Writing account.id to user DB...");
      admin
        .firestore()
        .collection("users")
        .doc(context.params.userId)
        .set({ connect_id: account.id }, { merge: true });
    }
  });
  </code></pre>