I believe I already answered this in the other post from you: How to upgrade apple operator 0.48 to 1.4.1 without deleting the old crd? - #29 by johscheuer (or to be precise here: How to upgrade apple operator 0.48 to 1.4.1 without deleting the old crd? - #36 by johscheuer).
Is there any reason you have to upgrade the cluster after you upgraded the operator? Or is this only additional information?
And is there any issue that you observe or is the operator still progressing with the upgrade and those errors show up only for a short time?