diff --git a/composer.json b/composer.json
index 68f7d43..625e4fe 100644
--- a/composer.json
+++ b/composer.json
@@ -18,6 +18,7 @@
     }
   },
   "require": {
+    "php": ">=8.0",
     "symfony/dom-crawler": "^7.1",
     "psr/http-client": "^1.0",
     "php-http/discovery": "^1.20",
diff --git a/src/Embed/Embed.php b/src/Embed/Embed.php
index d4dd125..40acce0 100644
--- a/src/Embed/Embed.php
+++ b/src/Embed/Embed.php
@@ -2,22 +2,15 @@
 
 namespace Hyvor\Unfold\Embed;
 
-//use Hyvor\Unfold\Embed\Platforms\GithubGist;
-//use Hyvor\Unfold\Embed\Platforms\Reddit;
-//use Hyvor\Unfold\Embed\Platforms\Tiktok;
-//use Hyvor\Unfold\Embed\Platforms\Twitter;
-//use Hyvor\Unfold\Embed\Platforms\Youtube;
 use Hyvor\Unfold\Exception\EmbedUnableToResolveException;
 use Hyvor\Unfold\Exception\EmbedParserException;
 use Hyvor\Unfold\Exception\UnfoldException;
 use Hyvor\Unfold\UnfoldCallContext;
 use Hyvor\Unfold\UnfoldConfig;
 use Hyvor\Unfold\Unfolded\Unfolded;
-use Hyvor\Unfold\UnfoldMethod;
 
 class Embed
 {
-
     /**
      * @return string[]
      */
@@ -43,7 +36,7 @@ public static function parse(
                 return $parser->parse();
             }
         }
-        return null;
+        throw new EmbedUnableToResolveException($url);
     }
 
     /**
@@ -56,14 +49,6 @@ public static function getUnfoldedObject(
     ) {
         $oembed = self::parse($url, $context->config);
 
-        if ($oembed === null) {
-            if ($context->method === UnfoldMethod::EMBED) {
-                throw new EmbedUnableToResolveException();
-            } else {
-                return null;
-            }
-        }
-
         return Unfolded::fromEmbed(
             $oembed,
             $url,
diff --git a/src/Embed/EmbedParserAbstract.php b/src/Embed/EmbedParserAbstract.php
index 994b86e..96750a8 100644
--- a/src/Embed/EmbedParserAbstract.php
+++ b/src/Embed/EmbedParserAbstract.php
@@ -31,6 +31,7 @@ public function __construct(
      * If the URL needs to be replaced before sending to the oEmbed endpoint,
      * return the new URL here. Otherwise, return null
      * Ex: m.facebook.com -> www.facebook.com
+     * @codeCoverageIgnore
      */
     public function replaceUrl(): ?string
     {
@@ -76,9 +77,11 @@ public function parse(): EmbedResponseObject
         } elseif ($this instanceof EmbedParserCustomInterface) {
             return $this->parseCustom();
         } else {
+            // @codeCoverageIgnoreStart
             throw new \Exception(
                 'EmbedParserAbstract should be implemented with either EmbedParserOEmbedInterface or EmbedParserCustomInterface'
-            ); // @codeCoverageIgnore
+            );
+            // @codeCoverageIgnoreEnd
         }
     }
 
diff --git a/src/Link/Metadata/MetadataParser.php b/src/Link/Metadata/MetadataParser.php
index 96a847d..264b6e0 100644
--- a/src/Link/Metadata/MetadataParser.php
+++ b/src/Link/Metadata/MetadataParser.php
@@ -18,7 +18,6 @@
 
 class MetadataParser
 {
-    // TODO: Rich Schema
 
     /**
      * @var MetadataObject[]
diff --git a/src/Link/Metadata/MetadataPriority.php b/src/Link/Metadata/MetadataPriority.php
index 9edbeca..15f451d 100644
--- a/src/Link/Metadata/MetadataPriority.php
+++ b/src/Link/Metadata/MetadataPriority.php
@@ -56,7 +56,7 @@ private function prioritizedAll(array $keys)
          *    'OG_TITLE' => [MetadataObject],
          * ]
          */
-        $keysNames = array_map(fn ($key) => $key->name, $keys);
+        $keysNames = array_map(fn($key) => $key->name, $keys);
         uksort($keyedMetadata, function ($a, $b) use ($keysNames) {
             return array_search($a, $keysNames) - array_search($b, $keysNames);
         });
@@ -64,7 +64,7 @@ private function prioritizedAll(array $keys)
         // index by 0,1,2
         $keyedMetadata = array_values($keyedMetadata);
         // return the values
-        return array_map(fn ($metadata) => $metadata->value, $keyedMetadata[0] ?? []);
+        return array_map(fn($metadata) => $metadata->value, $keyedMetadata[0] ?? []);
     }
 
     /**
@@ -144,7 +144,7 @@ public function siteUrl(string $url): ?string
             return $host ? $scheme . '://' . $host : null;
         }
 
-        return null;
+        return null; // @ignoreCodeCoverage
     }
 
 
diff --git a/src/Link/Metadata/Parsers/LinkParser.php b/src/Link/Metadata/Parsers/LinkParser.php
index c005636..2a2bf8e 100644
--- a/src/Link/Metadata/Parsers/LinkParser.php
+++ b/src/Link/Metadata/Parsers/LinkParser.php
@@ -13,15 +13,11 @@ public function add(): void
             $rel = $node->attr('rel');
             $href = $node->attr('href');
 
-            if (!$rel && !$href) {
-                return;
-            }
-
-            if ($rel === 'canonical') {
+            if ($rel === 'canonical' && is_string($href)) {
                 $this->parser->addMetadata(new MetadataObject(MetadataKeyType::CANONICAL_URL, $href));
             }
 
-            if ($rel === 'icon') {
+            if ($rel === 'icon' && is_string($href)) {
                 $this->parser->addMetadata(new MetadataObject(MetadataKeyType::FAVICON_URL, $href));
             }
         });
diff --git a/src/Unfold.php b/src/Unfold.php
index 7e6efda..22aabad 100644
--- a/src/Unfold.php
+++ b/src/Unfold.php
@@ -29,6 +29,7 @@ public static function unfold(
             return Embed::getUnfoldedObject($url, $context);
         } else {
             // both
+            // TODO:
         }
     }
 }
diff --git a/src/UnfoldCallContext.php b/src/UnfoldCallContext.php
index 88ac4d0..b76c2bd 100644
--- a/src/UnfoldCallContext.php
+++ b/src/UnfoldCallContext.php
@@ -15,7 +15,7 @@ public function __construct(
 
     public function duration(): int
     {
-        return (microtime(true) - $this->startTime) * 1000;
+        return (int)((microtime(true) - $this->startTime) * 1000);
     }
 
 }
diff --git a/tests/Feature/UnfoldEmbedTest.php b/tests/Feature/UnfoldEmbedTest.php
index 06bc3e4..4e72f97 100644
--- a/tests/Feature/UnfoldEmbedTest.php
+++ b/tests/Feature/UnfoldEmbedTest.php
@@ -5,6 +5,7 @@
 use GuzzleHttp\HandlerStack;
 use GuzzleHttp\Middleware;
 use GuzzleHttp\Psr7\Response;
+use Hyvor\Unfold\Exception\EmbedUnableToResolveException;
 use Hyvor\Unfold\Unfold;
 use Hyvor\Unfold\UnfoldConfig;
 use Hyvor\Unfold\UnfoldMethod;
@@ -61,4 +62,12 @@
         method: UnfoldMethod::EMBED,
     );
     expect($response->embed)->toBe('<script src="https://gist.github.com/123.js"></script>');
+});
+
+it('on unable to resolve', function () {
+    expect(fn() => Unfold::unfold(
+        'https://hyvor.com',
+        method: UnfoldMethod::EMBED,
+        config: new UnfoldConfig()
+    ))->toThrow(EmbedUnableToResolveException::class);
 });
\ No newline at end of file