I am trying to use the following function but every time I do, I receive the error below. I tried installing an older version of rlang as it works on a different R Studio bu
To solve this issue within a docker container, I ended up having to use devtools::install_version(..., dep = FALSE) to install an older version of rlang and manually install all dependencies for the packages I needed like dplyr.
Simply installing dplyr will install (or update) to the most recent version of rlang which released 0.3.0 on 2018-10-22 according to CRAN. Although I haven't figured out what changed with rlang and as_dictionary, this is a current workaround.
Although this was a pain, it did work.
To find all imports for a particular package you can use as.data.frame(installed.packages()) and filter for the specific package name you are interested in. The column name is Imports.
Edit:
Although I have not tested it myself, another solution I found online is to upgrade dplyr to 0.7.7.