Which line from the first stanza of "the second coming" states the figurative problem that the speaker infers will initiate chaos?

"turning and turning in the widening gyre"

"the falcon cannot hear the falconer"

"things fall apart; the centre cannot hold"

"the ceremony of innocence is drowned"

The line from the first stanza of "The Second Coming" by William Butler Yeats states that the figurative problem that the speaker infers will initiate chaos is "Turning and turning in the widening gyre". The gyre is a big vortex of nothingness thus implying  that chaos has started. Yeats intended to depict the upcoming apocalypse with heavy citation from the Book of Revelation. He said that we have now entered the edge of the gyre spiraling inward, the center of emptiness and chaos and the division of democracy, peace and science. And from there came a beast that will cleanse the world and create a new world.

Dude i have no idea what that is?