Deducting Solo 401k from remaining Self Employed Income after Foreign Earned Income Exclusion(FEIE)

I earned greater than the $126,500 Foreign Earn Income Exclusion(FEIE) limit in 2024 and am self-employed. I qualify via the Physical Presence Test. After adding my foreign-earned income, I am unable to add my contributions to my Solo/Individual 401k with an error stating that "Self-Employed Retirement plans are only for self-empolyed individuals (i.e., those filing Schedules C, F, or K-1".

How can I include my contributions made in 2024?