Symfony上的Imagick-尝试从全球名称空间加载class Imagick

Question

我正在尝试在Symfony（Shopware）中使用Imagick。当我在控制器中实例化新的Imagick-Object通过写作

$image = new \Imagick();

将为我提供http响应：

"Attempted to load class \u0022Imagick\u0022 from the global namespace.\nDid you forget a \u0022use\u0022 statement?"

完整的http-response：

{"errors":[{"code":"0","status":"500","title":"Internal Server Error","detail":"Attempted to load class \u0022Imagick\u0022 from the global namespace.\nDid you forget a \u0022use\u0022 statement?","meta":{"trace":[{"file":"\/var\/www\/html\/vendor\/symfony\/http-kernel\/HttpKernel.php","line":156,"function":"createImage","class":"ImageGenerator\\Controller\\ImageController","type":"-\u003E"},{"file":"\/var\/www\/html\/vendor\/symfony\/http-kernel\/HttpKernel.php","line":78,"function":"handleRaw","class":"Symfony\\Component\\HttpKernel\\HttpKernel","type":"-\u003E"},{"file":"\/var\/www\/html\/vendor\/symfony\/http-kernel\/Kernel.php","line":199,"function":"handle","class":"Symfony\\Component\\HttpKernel\\HttpKernel","type":"-\u003E"},{"file":"\/var\/www\/html\/vendor\/symfony\/http-kernel\/HttpCache\/SubRequestHandler.php","line":85,"function":"handle","class":"Symfony\\Component\\HttpKernel\\Kernel","type":"-\u003E"},{"file":"\/var\/www\/html\/vendor\/symfony\/http-kernel\/HttpCache\/HttpCache.php","line":479,"function":"handle","class":"Symfony\\Component\\HttpKernel\\HttpCache\\SubRequestHandler","type":"::"},{"file":"\/var\/www\/html\/vendor\/symfony\/http-kernel\/HttpCache\/HttpCache.php","line":452,"function":"forward","class":"Symfony\\Component\\HttpKernel\\HttpCache\\HttpCache","type":"-\u003E"},{"file":"\/var\/www\/html\/vendor\/symfony\/http-kernel\/HttpCache\/HttpCache.php","line":346,"function":"fetch","class":"Symfony\\Component\\HttpKernel\\HttpCache\\HttpCache","type":"-\u003E"},{"file":"\/var\/www\/html\/vendor\/symfony\/http-kernel\/HttpCache\/HttpCache.php","line":224,"function":"lookup","class":"Symfony\\Component\\HttpKernel\\HttpCache\\HttpCache","type":"-\u003E"},{"file":"\/var\/www\/html\/vendor\/shopware\/core\/HttpKernel.php","line":178,"function":"handle","class":"Symfony\\Component\\HttpKernel\\HttpCache\\HttpCache","type":"-\u003E"},{"file":"\/var\/www\/html\/vendor\/shopware\/core\/HttpKernel.php","line":81,"function":"doHandle","class":"Shopware\\Core\\HttpKernel","type":"-\u003E"},{"file":"\/var\/www\/html\/public\/index.php","line":77,"function":"handle","class":"Shopware\\Core\\HttpKernel","type":"-\u003E"}],"file":"\/var\/www\/html\/custom\/plugins\/ImageGenerator\/src\/Controller\/ImageController.php","line":42}}]}

我将shopware用作docker容器（dockware / ubuntu），并已安装Imagick-Extension通过：

sudo apt install php7.4-imagick

然后启用/etc/php/7.4/fpm/php.ini中的扩展程序，通过添加

extension=imagick

尝试指定完全合格的路径

extension=/usr/lib/php/20190902/imagick.so

，然后重新启动Apache Server。

但是，当我运行该应用程序时，它给了我上述错误。

Dockware图像中安装了几个PHP版本 - 但是我通过显示PHPVersion（）检查了使用的版本。因此，应安装在正确的版本上。不过，我还将其安装在所有其他版本的ShopWares依赖项上。

如果你们知道可能导致这个问题的原因，会很感激。我是网络开发的新手，所以请忍受我。提前致谢。