因此，通过进一步的实验，并试图得到一些工作与停留在干预/图像库，但没有转换svg到任何东西，我已经与以下解决方案：

public function dropzoneStore(Request $request){
    $image = $request->file('file');
    $imageName = date("dHis-").preg_replace("/[^a-zA-Z0-9.]/","",$image->getClientOriginalName());
    $uploadPath = public_path('up/').date("Y/m");
    $image->move($uploadPath,$imageName);
    //Thumbnail Creation
    $thumbPath = $uploadPath.'/thumbs/';
    File::isDirectory($thumbPath) or File::makeDirectory($thumbPath,0775,true,true);
    if($image->getClientOriginalExtension() != 'svg'){
        $imageThmb = Image::make($uploadPath.'/'.$imageName);
        $imageThmb->fit(300,300,function($constraint){$constraint->upsize();})->save($uploadPath.'/thumbs/thm_'.$imageName,80);
    }else{
        File::copy($uploadPath.'/'.$imageName,$uploadPath.'/thumbs/thm_'.$imageName);
    }
    return response()->json(['success'=>$imageName]);
}

这虽然有点牵强和黑客的方法在我看来，仍然似乎做的伎俩，以配合我的文件系统，需要一个拇指为每一个图像。
当我进一步扩展我的网站的使用，最终将SVG图像转换为缩略图时，我可能会研究它。但现在这样做就可以了，因为.svg还没有被用于网站开发，我可以在负载方面也很轻松。
无论哪种方式，我感谢每一个试图帮助我处理这件事的人！

对于任何想要强制Intervention Image忽略SVG的人，我提出了一个非常好的解决方案（特定于Laravel，但也应该可以用于其他实现）。我在https://stevenwoodson.com/blog/making-intervention-image-ignore-svgs/中记录了它，但要点是app/Exceptions/Handler.php文件中的render方法增加了以下内容：

/**
     * Render an exception into an HTTP response.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Throwable   $exception
     * @return \Illuminate\Http\Response
     */
    public function render($request, Throwable $exception)
    {
        /**
         * If the error class is `Intervention\Image\Exception\NotReadableException`, 
         * redirect the image URL to the original instead to avoid 500 errors on
         * the frontend. In particular, it has trouble with SVG images as the GD 
         * Library doesn't support anything other than JPG, PNG, GIF, BMP or WebP files.
         * 
         * This RegEx handles all Intervention Image filters defined ('/small/',
         * '/medium/', '/large/', for example) by isolating the URL path after
         * the configured Intervention URL Manipulation route (`imagecache` in 
         * this case) and replaces it with `/original/` which is a built in 
         * Intervention route that sends am HTTP response with the original image file.
         * 
         * @see https://image.intervention.io/v2/usage/url-manipulation
         */
        if ( get_class($exception) == "Intervention\Image\Exception\NotReadableException" ) {
            header('Location: '. preg_replace('/(imagecache\/[^\/]*\/)+/i', 'imagecache/original/', $request->getUri()) );
            exit();
        }

        return parent::render($request, $exception);
    }

这是什么做的整个描述是在注解块，一定要改变imagecache在那里，以任何您定义为您的路线在config/imagecache.php！