Multiple errors when attempting to submit forms.

Multiple errors when attempting to submit forms.

I've attached some screenshots to show a few of the different errors that my employees are receiving on a daily basis when attempting to submit their forms.
These errors occur seemingly regardless of device used, form being submitted, or whether they were on wifi or cellular data.
Each time one of these errors occurs, so far the data has been submitted successfully, with the exception of the access denied error which happens when there is an error submitting a saved form entry and the user tries to access the saved entry again after the failure. 

I don't know if these are known issues, or they are being worked on, or whatever, but I felt like I should at least point out that my organization is having them. Every user has had them, they happen multiple times a day, and they happen every day.
User pressed the submit button. This was the result.
User received and error when attempting to submit the form. They tried to resend the saved entry and received this error.
Every single time. Every single form. Every single day. Doesn't matter what kind of connection the user is on, doesn't matter what kind of device they are using.
This error pops up after there is a network error and you try to submit the form again.
Same as the other access denied error, but an example for a different user on a different device.