PHP Fatal Error in error log

Here are the USPS debug details from the cart page:

array (
  'error' => 'API reports an error. Data: {
    "response": "<?xml version=\\"1.0\\" encoding=\\"UTF-8\\"?>\\n<Error><Number>-2147219099</Number><Source>clsRateV4:UnpackRateNode</Source><Description>Missing value for ZipDestination.</Description><HelpFile/><HelpContext/></Error>\\n"
}.',
  'rates' => NULL,
  'settings' => 
  array (
    'props' => 
    array (
      'sender' => '82801',
      'commercialRates' => true,
      'groupByWeight' => true,
      'apiEndpoint' => 'https://secure.shippingapis.com/ShippingAPI.dll',
      'apiUserId' => '169WEATH1625',
      'supports' => 
      array (
        0 => 'settings',
      ),
      'id' => 'usps_simple',
      'method_title' => 'USPS Simple',
      'method_description' => 'Shows live USPS domestic rates on checkout',
      'enabled' => 'yes',
      'title' => 'USPS Simple',
      'rates' => 
      array (
      ),
      'tax_status' => 'taxable',
      'fee' => NULL,
      'minimum_fee' => NULL,
      'instance_id' => 0,
      'instance_form_fields' => 
      array (
      ),
      'instance_settings' => 
      array (
      ),
      'availability' => NULL,
      'countries' => 
      array (
      ),
      'plugin_id' => 'woocommerce_',
      'errors' => 
      array (
      ),
      'data' => 
      array (
      ),
    ),
    'settings' => 
    array (
      'enabled' => 'yes',
      'sender' => '82801',
      'user_id' => '169WEATH1625',
      'commercial_rate' => 'yes',
      'group_by_weight' => 'yes',
      'express_mail' => '',
      't_express_mail' => '',
      'express_mail_3' => 'no',
      'express_mail_2' => 'no',
      'express_mail_23' => 'no',
      'priority_mail' => '',
      't_priority_mail' => 'Priority Mail (USPS)',
      'priority_mail_1' => 'yes',
      'priority_mail_33' => 'no',
      'priority_mail_18' => 'no',
      'priority_mail_47' => 'no',
      'priority_mail_48' => 'no',
      'priority_mail_49' => 'no',
      'priority_mail_50' => 'no',
      'first_class_mail' => '',
      't_first_class' => 'First-Class Mail (USPS)',
      'first_class_0A' => 'no',
      'first_class_0B' => 'no',
      'first_class_0C' => 'no',
      'first_class_0D' => 'no',
      'first_class_12' => 'no',
      'first_class_15' => 'no',
      'first_class_19' => 'no',
      'first_class_61' => 'no',
      'first_class_53' => 'no',
      'first_class_78' => 'no',
      'standard_post' => '',
      't_standard_post' => '',
      'standard_post_4' => 'no',
      'media_mail' => '',
      't_media_mail' => '',
      'media_mail_6' => 'no',
      'library_mail' => '',
      't_library_mail' => '',
      'library_mail_7' => 'no',
    ),
  ),
  'package' => 
  array (
    'contents' => 
    array (
      '4b1905cff5bc8b47ae1c9d92e2c759df' => 
      array (
        'key' => '4b1905cff5bc8b47ae1c9d92e2c759df',
        'product_id' => 31562,
        'variation_id' => 0,
        'variation' => 
        array (
        ),
        'quantity' => 1,
        'data_hash' => 'b5c1d5ca8bae6d4896cf1807cdf763f0',
        'line_tax_data' => 
        array (
          'subtotal' => 
          array (
          ),
          'total' => 
          array (
          ),
        ),
        'line_subtotal' => 54.0,
        'line_subtotal_tax' => 0,
        'line_total' => 54.0,
        'line_tax' => 0,
        'product' => 
        array (
          'name' => '7mm Weatherby Magnum Hornady',
          'slug' => '7mm-weatherby-magnum-hornady',
          'price' => '54.00',
          'regular_price' => '69.00',
          'sale_price' => '54.00',
          'weight' => '48 oz',
          'weight_lbs' => 2.9999939851199997,
          'dimensions' => '8 x 8 x 5 in',
          'dimensions_in' => '8 x 8 x 5',
        ),
      ),
    ),
    'contents_cost' => 54.0,
    'applied_coupons' => 
    array (
    ),
    'user' => 
    array (
      'ID' => 0,
    ),
    'destination' => 
    array (
      'country' => 'US',
      'state' => '',
      'postcode' => '',
      'city' => '',
      'address' => '',
      'address_1' => '',
      'address_2' => '',
    ),
    'cart_subtotal' => '54',
    'csp_variables' => 
    array (
      'billing_email' => '',
      'billing_country' => 'US___202272510',
    ),
    'rates' => 
    array (
    ),
  ),
  'requests' => 
  Dgm\UspsSimple\Calc\Pair::__set_state(array(
     'online' => NULL,
     'standard' => NULL,
  )),
  'request' => 
  Dgm\UspsSimple\Calc\Request::__set_state(array(
     'apiUserId' => '169WEATH1625',
     'package' => 
    Dgm\UspsSimple\Calc\Package::__set_state(array(
       'orig' => 
      Dgm\UspsSimple\Calc\Area::__set_state(array(
         'countryCode' => 'US',
         'zipCode' => '82801',
      )),
       'dest' => 
      Dgm\UspsSimple\Calc\Area::__set_state(array(
         'countryCode' => 'US',
         'zipCode' => '',
      )),
       'items' => 
      array (
        '4b1905cff5bc8b47ae1c9d92e2c759df' => 
        Dgm\UspsSimple\Calc\Item::__set_state(array(
           'product' => 
          Dgm\UspsSimple\Calc\Product::__set_state(array(
             'weight' => 2.9999939851199997,
             'dim' => 
            Dgm\UspsSimple\Calc\Dim::__set_state(array(
               'length' => 8.0,
               'width' => 8.0,
               'height' => 5.0,
            )),
          )),
           'quantity' => 1,
        )),
      ),
    )),
     'services' => 
    Dgm\UspsSimple\Calc\Services::__set_state(array(
       'retailGroundEnabled' => false,
       'serviceMatchersByCode' => 
      array (
        1 => 
        array (
          0 => 
          Dgm\UspsSimple\Calc\MatchAny::__set_state(array(
             'service' => 
            Dgm\UspsSimple\Calc\Service::__set_state(array(
               'family' => 
              Dgm\UspsSimple\Calc\ServiceFamily::__set_state(array(
                 'id' => 'priority_mail',
                 'title' => 'Priority Mail (USPS)',
                 'sort' => 1,
              )),
               'fitFn' => NULL,
            )),
          )),
        ),
      ),
    )),
     'groupByWeight' => true,
     'commercialRates' => true,
  )),
  'responses' => 
  Dgm\UspsSimple\Calc\Pair::__set_state(array(
     'online' => '<?xml version="1.0" encoding="UTF-8"?>
<Error>
    <Number>-2147219099</Number>
    <Source>clsRateV4:UnpackRateNode</Source>
    <Description>Missing value for ZipDestination.</Description>
    <HelpFile/>
    <HelpContext/>
</Error>
',
     'standard' => NULL,
  )),
  'combinedResponse' => '<?xml version="1.0" encoding="UTF-8"?>
<Error>
    <Number>-2147219099</Number>
    <Source>clsRateV4:UnpackRateNode</Source>
    <Description>Missing value for ZipDestination.</Description>
    <HelpFile/>
    <HelpContext/>
</Error>
',
)

Thank you for the details.

Could you check if 1.7.1 works for you?

I just updated, I’ll keep an eye on the logs and let you know. Thank you for hopping on this so quickly!

This looks to be all resolved and fixed with the update.

Thank you again for all your help and jumping on this quickly. I really appreciate it.

Great! Thank you.