Error Upload File 422 error

#1

When I try to send an image to the server it is showing me the error:
The avatar failed to upload.

and in the browser inspector:

https://xxxxxxx/livewire/upload-file?expires=1618865730&signature=8565aca6129222c61728d751a7d4d536a66a08c57f94fa6d5ea7a2868a21bd26

422 (Unprocessable Entity)

Any idea?