The CSRF token is invalid. Please try to resubmit the form

Question

I\'m getting this error message every time I try to submit the form:

The CSRF token is invalid. Please try to resubmit the form

Answer 1

In my case I got a trouble with the maxSize annotation in the entity, so I increased it from 2048 to 20048.

 /**
 * @Assert\File(
 *     maxSize = "20048k",
 *     mimeTypes = {"application/pdf", "application/x-pdf"},
 *     mimeTypesMessage = "Please upload a valid PDF"
 * )
 */
private $file;

hope this answer helps!