Contradiction with Matthew 10:5-6
Jesus instructed the disciples not to go to the Gentiles, whereas Acts 17:15 involves traveling to Greece, a Gentile region.
Matthew 10:5-6: These twelve Jesus sent forth, and commanded them, saying, Go not into the way of the Gentiles, and into [any] city of the Samaritans enter ye not:
Contradiction with John 4:21
Jesus implied worship in a specific place was unnecessary, yet Acts 17:15 involves Paul preparing to debate at a specific location in Athens.
John 4:21: Jesus saith unto her, Woman, believe me, the hour cometh, when ye shall neither in this mountain, nor yet at Jerusalem, worship the Father.
Contradiction with Matthew 28:19
Jesus commanded the disciples to "teach all nations," which aligns rather than contradicts, but the delay described in Acts 17:15 could suggest hesitation.
Matthew 28:19: Go ye therefore, and teach all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Ghost: [teach...: or, make disciples, or, Christians of all nations]
Contradiction with Acts 16:6-7
The Holy Spirit prevents preaching in certain regions, whereas in Acts 17:15, Paul is explicitly assisted and encouraged to travel to another region.
Acts 16:6-7: Now when they had gone throughout Phrygia and the region of Galatia, and were forbidden of the Holy Ghost to preach the word in Asia,
Contradiction with 2 Corinthians 11:26
Paul describes frequent dangers in travels, while Acts 17:15 seems to describe smooth travel.
2 Corinthians 11:26: [In] journeyings often, [in] perils of waters, [in] perils of robbers, [in] perils by [mine own] countrymen, [in] perils by the heathen, [in] perils in the city, [in] perils in the wilderness, [in] perils in the sea, [in] perils among false brethren;
Contradiction with Luke 24:49
Jesus instructs the disciples to stay in Jerusalem until the Holy Spirit comes, whereas in Acts 17:15, Paul is actively moving into new regions.
Luke 24:49: And, behold, I send the promise of my Father upon you: but tarry ye in the city of Jerusalem, until ye be endued with power from on high.