Is an Ohio LLC renting houses in Penn required to file tax with Penn?

[Cj Yu]

From this site, it looks small LLC does not need to file sate tax:

https://www.dos.pa.gov/BusinessCharities/Business/Resources/Pages/Foreign-Limited-Liability-Partnership.aspx

"Under the U.S. Supreme Court's Wayfair decision, Pennsylvania may require collection and remittance of taxes from businesses that have a substantial economic nexus in Pennsylvania"

But from this site, it looks LLC needs to file Penn state tax no matter its size:

https://www.revenue.pa.gov/TaxTypes/Partnerships-S-Corps-LLCs/Pages/default.aspx#:~:text=Limited%20Liability%20Companies,pay%20corporate%20net%20income%20tax.

"All corporations and limited liability companies doing business in Pennsylvania are required to pay corporate net income tax."

Confused...

I know tons of foreign LLC doing residential property rental in Pittsburgh area. Any advice?