Full text of the error message:

"E-file Transmission Failure
 The IRS and states have temporarily stopped accepting transmissions of TY19 Individual e-file returns. The IRS and states will not accept transmissions of 2019 Individual e-file submissions until January of 2021. When the IRS and states open for e-file processing, you can once again resume transmitting of TY19 e-file submissions. Problem occurred transmitting efile data"