I am trying to import some files with CSV on magento 2, when i click check data, it nevers loads. when i click f12 i get
Failed to load resource: the server responded with a status of 503 (Service Unavailable)
magento/admin_[admin]/admin/import/validate/key/[key]/?form_key=[form
key]
Best Answer
First of all you should export the CSV format from magento 2 than you can changes in CSV and again upload this CSV in magento 2. I hope you understand.