We recently are having issues uploading files into Moodle.

Could you suggest what would be causing the error below.

Error
A required parameter (sesskey) was missing

Moodle 4.1.9+ (Build: 20240223)

Assignment, Submission Plugin, File Submissions 2022112800

Login as Student

Select a Course
Select an Assignment
Add a Submission

Select the File Picker icon
Choose File
Upload this File
After a few seconds get
Error
A required parameter (sesskey) was missing

I have tried updating to latest version

recreating the database