diff --git a/.travis.yml b/.travis.yml
index 766e0c4b..391585d3 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,7 +7,6 @@ php:
   - 7.1
   - 7.2
   - 7.3
-  - hhvm
   - nightly
 
 script:
diff --git a/Jenkinsfile b/Jenkinsfile
index ac979353..11dc7110 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -4,8 +4,8 @@ pipeline {
  		stage('PHP 7.1') {
  			agent {
  				docker {
- 				    image 'php:7.1-alpine'
- 				    args '-u root --privileged'
+ 					image 'php:7.1-alpine'
+ 					args '-u root --privileged'
  				}
  			}
  			steps {
@@ -20,8 +20,8 @@ pipeline {
  		stage('PHP 7.2') {
  			agent {
  				docker {
- 				    image 'php:7.2-alpine'
- 				    args '-u root --privileged'
+ 					image 'php:7.2-alpine'
+ 					args '-u root --privileged'
  				}
  			}
  			steps {
@@ -33,5 +33,21 @@ pipeline {
  				sh 'phpdbg -qrr -- ./vendor/bin/phpunit --coverage-text --colors=never'
  			}
  		}
+		stage('PHP 7.3') {
+			agent {
+				docker {
+					image 'php:7.3-alpine'
+					args '-u root --privileged'
+				}
+			}
+			steps {
+				sh 'chmod +x ./build/docker_install.sh'
+				sh 'sh build/docker_install.sh'
+				sh 'apk add --no-cache php7-phpdbg'
+				sh 'curl -sS https://getcomposer.org/installer | php'
+				sh 'php composer.phar install --ignore-platform-reqs'
+				sh 'phpdbg -qrr -- ./vendor/bin/phpunit --coverage-text --colors=never'
+			}
+		}
  	}
  }
\ No newline at end of file
diff --git a/src/API/Anilist/Model.php b/src/API/Anilist/Model.php
index 6626cf18..00115399 100644
--- a/src/API/Anilist/Model.php
+++ b/src/API/Anilist/Model.php
@@ -269,11 +269,21 @@ final class Model
 	 */
 	private function getMediaIdFromMalId(string $malId, string $type = 'ANIME'): ?string
 	{
+		if ($malId === '')
+		{
+			return NULL;
+		}
+
 		$info = $this->runQuery('MediaIdByMalId', [
 			'id' => $malId,
 			'type' => mb_strtoupper($type),
 		]);
 
+		if (array_key_exists('errors', $info))
+		{
+			return NULL;
+		}
+
 		return (string)$info['data']['Media']['id'];
 	}
 }
\ No newline at end of file
diff --git a/src/Model/Anime.php b/src/Model/Anime.php
index 4de786c0..213a8bc3 100644
--- a/src/Model/Anime.php
+++ b/src/Model/Anime.php
@@ -187,7 +187,7 @@ class Anime extends API {
 		$requester = new ParallelAPIRequest();
 		$requester->addRequest($this->kitsuModel->incrementListItem($data), 'kitsu');
 
-		if ($this->anilistEnabled && $data['mal_id'] !== null)
+		if (( ! empty($data['mal_id'])) && $this->anilistEnabled)
 		{
 			$requester->addRequest($this->anilistModel->incrementListItem($data, 'ANIME'), 'anilist');
 		}
@@ -214,7 +214,7 @@ class Anime extends API {
 		$requester = new ParallelAPIRequest();
 		$requester->addRequest($this->kitsuModel->updateListItem($data), 'kitsu');
 
-		if ($this->anilistEnabled && $data['mal_id'] !== null)
+		if (( ! empty($data['mal_id'])) && $this->anilistEnabled)
 		{
 			$requester->addRequest($this->anilistModel->updateListItem($data, 'ANIME'), 'anilist');
 		}
diff --git a/src/Types/AbstractType.php b/src/Types/AbstractType.php
index 5f9740b5..6c04ffd6 100644
--- a/src/Types/AbstractType.php
+++ b/src/Types/AbstractType.php
@@ -17,8 +17,10 @@
 namespace Aviat\AnimeClient\Types;
 
 use ArrayAccess;
+use ArrayObject;
+use Countable;
 
-abstract class AbstractType implements ArrayAccess {
+abstract class AbstractType implements ArrayAccess, Countable {
 	/**
 	 * Populate values for un-serializing data
 	 *
@@ -164,6 +166,17 @@ abstract class AbstractType implements ArrayAccess {
 		}
 	}
 
+	/**
+	 * Implementing Countable
+	 *
+	 * @return int
+	 */
+	public function count(): int
+	{
+		$keys = array_keys($this->toArray());
+		return count($keys);
+	}
+
 	/**
 	 * Recursively cast properties to an array
 	 *