Correlation Plot in R Won't Graph

Question

DATA (hope this link works): https://www.dropbox.com/sh/eizrotzgdkssyx4/AABr_0PBJjaSXxooz3c0bSAZa?dl=0https://www.dropbox.com/sh/eizrotzgdkssyx4/AABr_0PBJjaSXxooz3c0bSAZa?dl