yungzhu#7 fixed don't display youtube og image

example/pubspec.lock

@@ -14,7 +14,7 @@ packages:
       name: characters
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.0"
+    version: "1.1.0-nullsafety.5"
   charcode:
     dependency: transitive
     description:
@@ -35,7 +35,7 @@ packages:
       name: collection
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.14.13"
+    version: "1.15.0-nullsafety.5"
   convert:
     dependency: transitive
     description:
@@ -124,7 +124,7 @@ packages:
       name: meta
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.8"
+    version: "1.3.0-nullsafety.6"
   path:
     dependency: transitive
     description:
@@ -234,7 +234,7 @@ packages:
       name: typed_data
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.0"
+    version: "1.3.0-nullsafety.5"
   uuid:
     dependency: transitive
     description:
@@ -248,7 +248,7 @@ packages:
       name: vector_math
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.8"
+    version: "2.1.0-nullsafety.5"
 sdks:
-  dart: ">=2.9.0-14.0.dev <3.0.0"
+  dart: ">=2.12.0-0 <3.0.0"
   flutter: ">=1.12.13+hotfix.5 <2.0.0"

lib/web_analyzer.dart

@@ -312,7 +312,7 @@ class WebAnalyzer {
 
   static String _getMetaContent(
       Document document, String property, String propertyValue) {
-    final meta = document.head.getElementsByTagName("meta");
+    final meta = document.getElementsByTagName("meta");
     final ele = meta.firstWhere((e) => e.attributes[property] == propertyValue,
         orElse: () => null);
     if (ele != null) return ele.attributes["content"]?.trim();

pubspec.lock

@@ -7,7 +7,7 @@ packages:
       name: characters
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.0"
+    version: "1.1.0-nullsafety.5"
   charcode:
     dependency: transitive
     description:
@@ -21,7 +21,7 @@ packages:
       name: collection
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.14.13"
+    version: "1.15.0-nullsafety.5"
   csslib:
     dependency: transitive
     description:
@@ -68,7 +68,7 @@ packages:
       name: meta
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.8"
+    version: "1.3.0-nullsafety.6"
   path:
     dependency: transitive
     description:
@@ -115,13 +115,13 @@ packages:
       name: typed_data
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.0"
+    version: "1.3.0-nullsafety.5"
   vector_math:
     dependency: transitive
     description:
       name: vector_math
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.8"
+    version: "2.1.0-nullsafety.5"
 sdks:
-  dart: ">=2.9.0-14.0.dev <3.0.0"
+  dart: ">=2.12.0-0 <3.0.0"