I bumped into the same issue.
These are paths:
wp-stateless/v1/status
wp-stateless/v1/jobs
wp-stateless/v1/getSettings
wp-stateless/v1/getMediaLibrary
wp-stateless/v1/getMediaItem
I found this issue may related to wordpress 5.5 REST API change
Any quick fix is welcome.
Besides, are these endpoints intented to be public?