Magento 2.3.3 Adding Custom File Upload button in system configuration not working in local

Question

in magento 2.3.1 below code is work

<field id="file_upload" translate="label" type="Magento\Config\Block\System\Config\Form\Field\File" sortOrder="10" showInDefault="1" showInWebsite="1" showInStore="1">
 <label>Upload File</label>
 <backend_model>Magento\Config\Model\Config\Backend\File</backend_model>
 <upload_dir config="system" scope_info="1">customUpload</upload_dir>
</field>

but in Magento 2.3.3 this not working it give error

Invalid parameter given. A valid $fileId[tmp_name] is expected.

enter image description here

• Kishan Savaliya: If is not Magento 2.3.3 issue. Because I've used same code in my M2.3.3 and it is working fine. Can you please use this configuration anywhere else and check ?
• Chandresh Chauhan: Hi @KishanSavaliya i used this configuration in my custom module where i getting this error also i test this code in local
• Kishan Savaliya: can you please check you exception.log or system.log in var/log directory ? From where you're getting this issue ? Is that your any custom module or default magento file ?
• Chandresh Chauhan: no i have install new magento 2.3.3 and also magento core functionality in configuration -> Sales -> Invoice and Packing Slip Design -> Logo for PDF Print-outs (200x50) not working , in live server it's work but not in local
• Kishan Savaliya: You can check this image <drive.google.com/file/d/1WL17yXTjJDHOZk8IVaEhwCelyIpSonUu/…> I just updated that image here which you've mentioned here. And that is working with default Magento 2.3.3 version.

Answer 1

i got the issue in file Magento\Framework\File\Uploader.php in which new method was added so i just comment that method, in function _setUploadFileId($fileId) found the

$this->validateFileId($fileId); 

change to

//$this->validateFileId($fileId);

it's work in my case in local server

• Ali Raza: by simply removing the validation, you don't solve the problem. You just ignore it. And: It's never a good idea to change a file in vendor/* as it will be rewritten on every deployment (composer install/update).
• Chandresh Chauhan: yes @AliRaza i know that change in vendor/* is never recommended but it's only for in local (xampp) server. in liver server works fine without any changes.
• nino.aratari: In my enviroment i found this issue in shared hosting. the validate function check the file uploaded by php in an array of dirs including the sys_get_temp_dir(), but that dir is different from $_FILES['input']['tmp_name'] base dir. exampls: sys_get_temp_dir() = /tmp dir where php put temp file in my vhost: /home/mydomain/tmp and so it fails during validation. you should extend the Uploader.php with aplugin to add your local tmp path

Answer 2

In my enviroment i found this issue in shared hosting. the validate function check the file uploaded by php in an array of dirs including the sys_get_temp_dir(), but that dir is different from $_FILES['input']['tmp_name'] base dir.

exampls:

sys_get_temp_dir() = /tmp

dir where php put temp file in my vhost: /home/mydomain/tmp

and so it fails during validation.

you should extend the Uploader.php with aplugin to add your local tmp path