So once again double speak. God commanded not to eat blood. That didn't change in the New Covenant as shown in Acts. Catholics are assigning the sin of eating blood both to Jesus who was still under the Old Covenant and to Him for promoting sin in the New Covenant.
Since the Church in Acts 15 is the same Church offering the Eucharist, clearly, the prohibition on eating blood was understood to refer to things other that the Eucharist.