diff --git a/src/Model/Package.php b/src/Model/Package.php
index 7ddc90f..7d8b96f 100644
--- a/src/Model/Package.php
+++ b/src/Model/Package.php
@@ -44,7 +44,7 @@ class Package extends DataObject
      */
     public function getTitle()
     {
-        return preg_replace('#^[^/]+/(silverstripe-)?#', '', $this->Name);
+        return preg_replace('#^[^/]+/(silverstripe-)?#', '', $this->Name ?? '');
     }
 
     /**
diff --git a/src/Reports/SiteSummary.php b/src/Reports/SiteSummary.php
index 94caa69..be6c8cb 100644
--- a/src/Reports/SiteSummary.php
+++ b/src/Reports/SiteSummary.php
@@ -209,7 +209,7 @@ protected function resolveCmsVersion()
         ];
         $this->extend('updateVersionModules', $versionModules);
 
-        $records = $this->sourceRecords()->filter('Name', array_keys($versionModules));
+        $records = $this->sourceRecords()->filter('Name', array_keys($versionModules ?? []));
         $versionParts = [];
 
         foreach ($versionModules as $name => $label) {
diff --git a/src/Tasks/UpdatePackageInfoTask.php b/src/Tasks/UpdatePackageInfoTask.php
index 2ddaa99..9bfffa4 100644
--- a/src/Tasks/UpdatePackageInfoTask.php
+++ b/src/Tasks/UpdatePackageInfoTask.php
@@ -163,7 +163,7 @@ public function run($request)
         $packages = $this->getPackageInfo($rawPackages);
 
         // Get "name" from $packages and put into an array
-        $moduleNames = array_column($packages, 'Name');
+        $moduleNames = array_column($packages ?? [], 'Name');
 
         $supportedPackages = $this->getSupportedPackages();
         $moduleHealthInfo = $this->getHealthIndicator($moduleNames);
@@ -179,7 +179,7 @@ public function run($request)
             foreach ($packages as $package) {
                 $packageName = $package['Name'];
                 if (is_array($supportedPackages)) {
-                    $package['Supported'] = in_array($packageName, $supportedPackages);
+                    $package['Supported'] = in_array($packageName, $supportedPackages ?? []);
                 }
                 if (is_array($moduleHealthInfo) && isset($moduleHealthInfo[$packageName])) {
                     $package['Rating'] = $moduleHealthInfo[$packageName];
@@ -202,12 +202,12 @@ public function getPackageInfo($packageList)
             // Convert object to array, with Capitalised keys
             $package = get_object_vars($package);
             return array_combine(
-                array_map('ucfirst', array_keys($package)),
-                $package
+                array_map('ucfirst', array_keys($package ?? [])),
+                $package ?? []
             );
         };
 
-        $packageList = array_map($formatInfo, $packageList);
+        $packageList = array_map($formatInfo, $packageList ?? []);
         $this->extend('updatePackageInfo', $packageList);
         return $packageList;
     }
diff --git a/src/Util/ApiLoader.php b/src/Util/ApiLoader.php
index c3c2eb5..c8437f7 100644
--- a/src/Util/ApiLoader.php
+++ b/src/Util/ApiLoader.php
@@ -71,7 +71,7 @@ public function doRequest($endpoint, callable $callback)
             throw new RuntimeException($failureMessage . 'Error code ' . $response->getStatusCode());
         }
 
-        if (!in_array('application/json', $response->getHeader('Content-Type'))) {
+        if (!in_array('application/json', $response->getHeader('Content-Type') ?? [])) {
             throw new RuntimeException($failureMessage . 'Response is not JSON');
         }
 
@@ -176,8 +176,8 @@ protected function handleCacheFromResponse(Response $response, $result)
             // Combine separate header rows
             $cacheControl = implode(', ', $cacheControl);
 
-            if (strpos($cacheControl, 'no-store') === false
-                && preg_match('/(?:max-age=)(\d+)/i', $cacheControl, $matches)
+            if (strpos($cacheControl ?? '', 'no-store') === false
+                && preg_match('/(?:max-age=)(\d+)/i', $cacheControl ?? '', $matches)
             ) {
                 $duration = (int) $matches[1];
 
diff --git a/src/Util/ComposerLoader.php b/src/Util/ComposerLoader.php
index 3e99ec6..7e4c48a 100644
--- a/src/Util/ComposerLoader.php
+++ b/src/Util/ComposerLoader.php
@@ -59,8 +59,8 @@ public function build()
             throw new Exception('composer.json or composer.lock could not be found!');
         }
 
-        $this->setJson(json_decode($composerJson));
-        $this->setLock(json_decode($composerLock));
+        $this->setJson(json_decode($composerJson ?? ''));
+        $this->setLock(json_decode($composerLock ?? ''));
 
         $this->extend('onAfterBuild');
     }
diff --git a/src/Util/ModuleHealthLoader.php b/src/Util/ModuleHealthLoader.php
index 89e7f43..6580994 100644
--- a/src/Util/ModuleHealthLoader.php
+++ b/src/Util/ModuleHealthLoader.php
@@ -46,6 +46,6 @@ public function setModuleNames(array $moduleNames)
 
     protected function getCacheKey()
     {
-        return sha1(json_encode($this->getModuleNames()));
+        return sha1(json_encode($this->getModuleNames()) ?? '');
     }
 }
diff --git a/tests/Model/PackageTest.php b/tests/Model/PackageTest.php
index 729127e..4392c07 100644
--- a/tests/Model/PackageTest.php
+++ b/tests/Model/PackageTest.php
@@ -74,8 +74,8 @@ public function testBadges()
         // and that all our input is output
         reset($badgeControlSample);
         foreach ($badgeViewData as $badgeData) {
-            $title = key($badgeControlSample);
-            $type = current($badgeControlSample);
+            $title = key($badgeControlSample ?? []);
+            $type = current($badgeControlSample ?? []);
             $this->assertSame(
                 [
                     'Title' => $title,