Contradiction with Matthew 28:19
Acts 11:19 states they spoke to Jews only, while Matthew 28:19 commands the disciples to teach all nations, indicating a broader audience.
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 1:8
Acts 11:19 describes preaching only to Jews, whereas Acts 1:8 instructs the disciples to witness to the ends of the earth, including non-Jewish areas.
Acts 1:8: But ye shall receive power, after that the Holy Ghost is come upon you: and ye shall be witnesses unto me both in Jerusalem, and in all Judaea, and in Samaria, and unto the uttermost part of the earth. [power...: or, the power of the Holy Ghost coming upon you]
Contradiction with Romans 1:16
Acts 11:19 focuses on Jews only, but Romans 1:16 says the gospel is for everyone that believes, to the Jew first, and also the Greek.
Romans 1:16: For I am not ashamed of the gospel of Christ: for it is the power of God unto salvation to every one that believeth; to the Jew first, and also to the Greek.