Form 8949 - can I still e-fill this form?

After e-filling Federal taxes, TurboTax informed me that still I must send by mail Form 8453 and Form 8949

 

"Form 8949, Sales and Other Dispositions of Capital Assets (or a statement with the same information), if you elect not to report your transitions electronically on Form 8949"


Pity I wasn't informed about this before e-filling...
I've connected to the broker account, imported transactions to the desktop version of TurboTax.

Can I still try to e-fill Form 8949 (amendment?) in TurboTax, or sending by mail is the only or the best option?

 

BTW. Re-posting this question with corrected category..

 

Regards,

AL