Media Gallery - Cannot upload images

Question

i've created a brand new Magento 2.4.3-p1 installation and using the media gallery i'm getting some errors. The main error is when i'm trying to upload images i always get the error below

One other issue is when i access one folder...sometimes not all the images are displayed. For example, below are 2 prints, from FTP Folder and from media gallery

Can someone help me understand what is wrong at my end and how to fix this.

Regards

Answer 1

 $target = $this->_mediaDirectory->getAbsolutePath('catalog/product/product_attachment');
        try {
            $uploader = $this->_fileUploaderFactory->create(
                ['fileId' => 'product_attachment']
            );
            $uploader->setAllowedExtensions(['jpg', 'png' , 'jpeg']);
            $uploader->setAllowRenameFiles(true);
            $uploader->setFilesDispersion(true);
            $result = $uploader->save($target);