I opened and contributed to solo 401k in Dec 2024. I just realized that contribution should be from Net Earnings. My business was at a loss. Is this Excess Contribution?

I am 1099. I haven't filed tax yet. How should I report on tax 2024? What forms should I fill out with the brokerage. Thanks! This is somewhat continuation from my previous post, but for some reason, I can't sign back in and reply, etc. other than make new post.