Hi Chase,
It looks like some kind of transient error or rate limiting performed by pCloud.
Perhaps you can find some useful tips in this somewhat similar thread:
https://forum.rclone.org/t/how-to-handle-pcloud-rate-limit/31279
My best advice is to test using a very simple copy command like described here:
https://forum.rclone.org/t/how-to-handle-pcloud-rate-limit/31279/5