diff --git a/plugin/think-library/src/Plugin.php b/plugin/think-library/src/Plugin.php
index 66e7c9df6..bdd0ff723 100644
--- a/plugin/think-library/src/Plugin.php
+++ b/plugin/think-library/src/Plugin.php
@@ -207,7 +207,7 @@ abstract class Plugin extends Service
                 return app(static::class)->appPath;
             case 'getappspace':
                 return app(static::class)->appSpace;
-            case 'getapppackage';
+            case 'getapppackage':
                 return app(static::class)->package;
             default:
                 $class = basename(str_replace('\\', '/', static::class));
diff --git a/plugin/think-library/src/service/CaptchaService.php b/plugin/think-library/src/service/CaptchaService.php
index bceb7feea..b9a244ea7 100644
--- a/plugin/think-library/src/service/CaptchaService.php
+++ b/plugin/think-library/src/service/CaptchaService.php
@@ -14,7 +14,7 @@
 // | github 仓库地址 ：https://github.com/zoujingli/ThinkLibrary
 // +----------------------------------------------------------------------
 
-declare (strict_types=1);
+declare(strict_types=1);
 
 namespace think\admin\service;
 
@@ -152,7 +152,9 @@ class CaptchaService extends Service
         imagepng($img);
         $data = ob_get_contents();
         ob_end_clean();
-        imagedestroy($img);
+        if (version_compare(PHP_VERSION, '8.0.0', '<')) {
+            imagedestroy($img);
+        }
         return base64_encode($data);
     }
 
@@ -182,4 +184,4 @@ class CaptchaService extends Service
             return false;
         }
     }
-}
\ No newline at end of file
+}