diff --git a/phpstan.neon.dist b/phpstan.neon.dist
index 4f781d20..62cbc75f 100644
--- a/phpstan.neon.dist
+++ b/phpstan.neon.dist
@@ -7,4 +7,11 @@ parameters:
     checkMissingIterableValueType: false
     treatPhpDocTypesAsCertain: false
     paths:
-        - src/
\ No newline at end of file
+        - src/
+    ignoreErrors:
+        -
+            message: '~^Access to an undefined property MailchimpMarketing\\ApiClient~'
+            path: src/integrations/mailchimp/class-mailchimp.php
+        -
+            message: '~^Function apply_filters invoked with [0-9] parameters~'
+            path: src/routes/class-buckaroo-response-handler-route.php
\ No newline at end of file
diff --git a/src/routes/class-mailchimp-fetch-segments-route.php b/src/routes/class-mailchimp-fetch-segments-route.php
index 7868ef6f..28435c6a 100644
--- a/src/routes/class-mailchimp-fetch-segments-route.php
+++ b/src/routes/class-mailchimp-fetch-segments-route.php
@@ -133,6 +133,11 @@ private function extract_tags_and_segments( $response ): array {
       'tags' => [],
       'segments' => [],
     ];
+
+    if ( ! isset( $response->segments ) ) {
+      return $tags_segments;
+    }
+
     foreach ( $response->segments as $segment ) {
       switch ( $segment->type ) {
         case 'static':