We've built a web solution using metronic react - no issues on windows or android devices, when on an apple device you can create a new record but when you then go to update it - it throws a submitForm(() TypeError: Load failed.
Has us stumped...
Not sure how to help you, cause we aren't able to reproduce your exact case. We've tested evrth related forms and it works in iOS/MacOS.
Try to check the SO thread https://stackoverflow.com/questions/60890774/formik-submitform-typeerror maybe it will help you.