If you have excluded all of your Foreign Earned Income, then there is no taxable income on your tax return so that it cannot be e-filed.
You can add $1 of interest income so that the return can be e-filed. For the Received from box enter any name. In box 1 enter $1 and continue.
Enter 1099-int in the Search box located in the upper right of the program screen. Click on Jump to 1099-int