The EU is dependent on US-foreign policy and it is interested in Venezuela because of future profits from its rich oil resources.
The EU is not "dependent" on the United States of America in terms of foreign policy making and therefore it is a conspiracy theory presented without any evidence. It is also a recurring pro-Kremlin disinfo narrative about US controlling other countries. Previous examples include US controlling German media and it's foreign policy and keeping Britain under it's thumb.
In the declaration on behalf of the EU on the situation in Venezuela the High Representative for Foreign and Security Policy/Vice-President of the European Commission, Federica Mogherini reiterated that the last presidential elections in Venezuela were neither free, fair, nor credible, lacking democratic legitimacy. The EU has called for the urgent holding of free, transparent and credible presidential elections in Venezuela.