I’d expect a recount.
https://ballotpedia.org/Recount_laws_in_Pennsylvania
“A recount of ballots is required in an election district if three qualified electors in that district file a petition alleging that fraud or error occurred in the tabulation of votes or the marking of election ballots. Petitioners are not required to “specify in their petition the particular act of fraud or error which they believe to have been committed nor to offer evidence to substantiate the allegations of their petition.” The petition must be accompanied by a $50 deposit, which will be retained by election officials if it is determined that fraud or error did not occur. This deposit is due to each county in which a recount is requested.[3]
The secretary of the commonwealth must order a recount if any of the following conditions are met:[4]
1. a candidate for statewide office was defeated by 0.5 percent or less of all votes cast for the office
2. a statewide ballot measure was approved or rejected by 0.5 percent or less of all votes cast for the measure”
So, for a District (not statewide) race, it’s not automatic
I’m sure there are plenty on both sides to claim “error”...