Warning: An unhandled error was caught from submitForm() TypeError: Right-hand side of 'instanceof' is not an object at formik.esm.js:784:31

[keyurchitroda]

Issue facing :
I cannot submit the form to the dev/production server.
But in the local code, it is working fine for me.

Warning: An unhandled error was caught from submitForm() TypeError: Right-hand side of 'instanceof' is not an object
at formik.esm.js:784:31

Version
"formik": "2.4.6",
"yup": "0.28.5"

[pritesh511]

Yes, facing same issue today. It is working fine in localhost but not in dev/stage. can anyone please help here.