drupal 7图像上传字段未显示

Question

So i have a bit of an issue. My image upload field and widget are randomly disappearing. When i clear system cache, everything works perfectly but then after 24hrs/48hrs, the image upload field just disappears. All the php setting are set properly, files sizes and everything. I'm attaching 2 images to show you the difference.

Please help if you know how to fix this issue. It's not a duplicate, files are not being deleted, upload field/ widget is disappearing

Answer 1

Cron executes commands at specified intervals. These commands are called "cron jobs." Cron is available on Unix, Linux and Mac servers. Windows servers use a Scheduled Task to execute commands. Thus you can set your system cache to be cleared automatically, say every day.