I am building a new ecommerce on Magento using the Molla template. it is installed but when I try to import a home page using the Front End Builder > Import & Export Option I get the error: 

A technical problem with the server created an error. Try again to continue what you were doing. If the problem persists, try again later.

Can you advise on possible causes and suggested workaround?

Thanks!

JB

Hi Jorge Briceno,

Were you able to fix this issue?... I am facing the same problem here as well. Apparently the .XML file type is not welcome on Magento.
If you found a solution, I would appreciate it if you could share it here.

Thanks !

Hi there !

Is there an email address to send this information to ?... I wouldn't like to share this access info here in a public post. 
For your time and support, many thanks.
Looking forward to hearing from you.

do you fix this issue still see it magento 2.4.1

Hi Mustafa,

As for my case, support team helped by fixing it and chancing one file and adding another UPLOADER. This change allowed uploading these xml files.

Kind regards

can you share code/Mgs plugin in any link because support team take long time to response.

and thanks you so much for your reply

still wait for support to response

same :(

Hi Mustafa,

Not sure if I (as a user/buyer) am allowed to share any files here. But I can tell you a simple (temporary) work around... If you check your Magento 2.4.1 error log, you should see that the UPLODER.PHP file gives error on the line 343 (or so). Just "comment" that chunk of lines and you should be able to upload the XML file. After that, remember to restore those lines back to normal.

The chunk should look like this :

::::

protected function _validateFile()
    {
        if ($this->_fileExists === false) {
            return;
        }

        //is file extension allowed
        if (!$this->checkAllowedExtension($this->getFileExtension())) {
            throw new ValidationException(__('Disallowed file type.'));
        }
        //run validate callbacks
        foreach ($this->_validateCallbacks as $params) {
            if (is_object($params['object'])
                && method_exists($params['object'], $params['method'])
                && is_callable([$params['object'], $params['method']])
            ) {
                $params['object']->{$params['method']}($this->_file['tmp_name']);
            }
        }
    }

::::

Thnx you so much new error now show. 

Uncaught SyntaxError: Unexpected token E in JSON at position 0
    at JSON.parse (<anonymous>)
    at Function.jQuery.parseJSON (jquery.js:9017)
    at Function.jQuery.parseJSON (jquery-migrate.js:307)
    at Object.success ((index):354)
    at fire (jquery.js:3238)
    at Object.fireWith [as resolveWith] (jquery.js:3368)
    at done (jquery.js:9846)
    at XMLHttpRequest.callback (jquery.js:10317)

thanks alot for your help friend

i have fix it by comment check funcstion only 

        //is file extension allowed
      //  if (!$this->checkAllowedExtension($this->getFileExtension())) {
        //    throw new ValidationException(__('Disallowed file type.'));
//}