Answered FormIt with custom hook won't redirect after form submission

<?php
// Load class
...

// Common variables
// ================
...
$snippet = 'ecSaveQuotes';
$submit        = $_POST['submit'];
$submission    = (int) $_GET['submission'];

// Get Form fields
// ===============

$formFields = $hook->getValues();

$customer_fields = array(
'firstname' => $formFields['firstname'],
...
);
$request_fields  = array(
'cutomer' => $formFields['customerid'],
...
);
$process_fields = array(
'request' => $formFields['requestid'],
...
);

// Save the quote and update related objects
// =========================================

$process  = $modx->newObject('quoteProcess', $process_fields);
$customer = $modx->getObject('quoteCustomer', $formFields['customerid']);
$customer->fromArray($customer_fields);
$request = $modx->getObject('quoteRequest', $formFields['requestid']);
$request->fromArray($request_fields);

if ($customer->save() && $request->save() && $process->save()) {
  return true;
} else {
  $modx->log(xPDO::LOG_LEVEL_ERROR, 'An error occured while saving the quote.', '', $snippet, __FILE__, __LINE__);
  $hook->addError('error_message', $error_message);
  return false;
}

[[!FormIt@Estimator?
    &preHooks=`ecLoadRequests` 
    &hooks=`ecSaveQuotes,email,redirect`
    &emailSubject=`Price Estimate`
    &emailTpl=`tplEstimatorEmail`
    &emailFrom=`[email protected]`
    &emailFromName=`[[currentUser]]`
    &emailTo=`[email protected]`   
    &redirectTo=`34`
    &store=`1`
]]
[[$tplEstimatorForm]]

<?php
// Load class
// ==========

...

$snippet = 'ecLoadRequests';
$submission = (int) $_GET["submission"];

// Get the existing quote request
// ==============================

if (!empty($submission)) {
  $request = $modx->getObject('quoteRequest', array(
    'submissionid' => $submission
  ));
  if ($request) {
    // Request object is not null/empty
    // Get request fields
    $requestid           = $request->get('id');
    ...

    // Get the related customer + assign placeholders
    $customer   = $request->getOne('Customer');
    $customerid = $customer->get('id');
    ...
    // Set customer placeholders
    $modx->setPlaceholders(array(
    'customerid' => $customerid,
    'firstname' => $firstname,
    ...
    ), 'eq.');

    // Set request placeholders
    $modx->setPlaceholders(array(
    'requestid' => $requestid,
    'customer' => $customerid,
    'contentlist' => $contentlist
    ...    
  ), '');
    

  } else {
    // Show and log error message if quote request is not found with supplied submissionid
    $hook->addError('error_message', 'Could not find Quote Request with ID: ' . $submission);
    $modx->log(xPDO::LOG_LEVEL_ERROR, 'Could not find Quote Request with ID: ' . $submission, '', $snippet, __FILE__, __LINE__);
    //return false;
  }

} else {
  // Show and log error message if no valid submission id supplied
  $hook->addError('error_message', 'No valid submission id supplied');
  $modx->log(xPDO::LOG_LEVEL_ERROR, 'No valid submission id supplied', '', $snippet, __FILE__, __LINE__);
  //return false;

}

return true;