[BUGFIX] Solved error while upgrading from 2.1 to 2.2

Author: lewisvoncken

app/code/Magento/Tax/Setup/UpgradeData.php

@@ -81,7 +81,7 @@ public function upgrade(ModuleDataSetupInterface $setup, ModuleContextInterface
                 false
             );
         }
-        if (version_compare($context->getVersion(), '2.0.2', '<')) {
+        if (version_compare($context->getVersion(), '2.0.3', '<')) {
             //Update the tax_region_id
             $taxRateList = $this->taxRateRepository->getList($this->searchCriteriaFactory->create());
             /** @var \Magento\Tax\Api\Data\TaxRateInterface $taxRateData */
@@ -91,6 +91,9 @@ public function upgrade(ModuleDataSetupInterface $setup, ModuleContextInterface
                     /** @var \Magento\Directory\Model\Region $region */
                     $region = $this->directoryRegionFactory->create();
                     $region->loadByCode($regionCode, $taxRateData->getTaxCountryId());
+                    if ($taxRateData->getTaxPostcode() === null) {
+                        $taxRateData->setTaxPostcode('*');
+                    }
                     $taxRateData->setTaxRegionId($region->getRegionId());
                     $this->taxRateRepository->save($taxRateData);
                 }

app/code/Magento/Tax/etc/module.xml

@@ -6,7 +6,7 @@
  */
 -->
 <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Module/etc/module.xsd">
-    <module name="Magento_Tax" setup_version="2.0.2">
+    <module name="Magento_Tax" setup_version="2.0.3">
         <sequence>
             <module name="Magento_Catalog"/>
             <module name="Magento_Checkout"/>