I am getting below error while upload image to static block or static pages.
A technical problem with the server created an error. Try again to continue what you were doing. If the problem persists, try again later.
I have seen as per Magento team it will be fixed in 2.3.1 but seems not fixed. I have checked the file and there is
imageUploader instead of
I have seen many blog and official git branch saying it is fixed.