Trying to plot sf map. Class [ "sf" "data.frame"] I get the "All columns in a tibble must be vectors" error. One of the columns sfc_MULTIPOLYGON object. REPREX/Version are below.
This sounds like a vctrs issue to me. You might try updating to the most recent version that package. I can't reproduce the error with the following package version on my system:
That was it! Upgrade 'vctrs' to vctrs_0.3.1. fixed the problem. The error message threw me off. There might come lots of unwarranted blame on "sf" because of this. Might be good idea to add in the error message to check the vctr version.