如何修复在PHPexcel中不可见的图像

Question

已插入图像，但是在Excel工作表中看不到图像。 这是我的代码。

$gdImage = imagecreatefromjpeg('/uploads/blue.jpg');
    $objDrawing = new PHPExcel_Worksheet_MemoryDrawing();
    $objDrawing->setName('Sample image');
    $objDrawing->setDescription('Sample image');
    $objDrawing->setCoordinates('A2');
    $objDrawing->setImageResource($gdImage);
    $objDrawing->setRenderingFunction(PHPExcel_Worksheet_MemoryDrawing::RENDERING_JPEG);
    $objDrawing->setMimeType(PHPExcel_Worksheet_MemoryDrawing::MIMETYPE_DEFAULT);
    $objDrawing->setHeight(150);
    $objDrawing->setWorksheet($objPHPExcel->getActiveSheet());

这是图像的路径