I had same issue and made phone call to Turbo tax. After 2 hours-long screen sharing, they said there is no way to file through efile in this case and gave me this article as an example. They told me that I should file by mail.

https://ttlc.intuit.com/questions/4699879-error-form-1040-line-12b-elective-deferrals-to-qualified-p...

You can also find my case in the below link.

https://ttlc.intuit.com/questions/4726311-efile-wont-transmit-abd-keeps-going-back-to-we-need-to-mak...

turbotax desktop and quickbooks online don't work together, now this. I can't believe what a horrible product this is.