ERROR ! Error: package or namespace load failed for ‘adNames)), versionCheck = vI[[i]]):

Error: package or namespace load failed for ‘brms’ in loadNamespace(i, c(lib.loc, .libPaths()), versionCheck = vI[[i]]):
namespace ‘rlang’ 0.4.7 is already loaded, but >= 0.4.10 is required
In addition: Warning message:
package ‘brms’ was built under R version 4.0.5

Hi,
your post is a bit thin on details, so it is hard to help, but I guess installing a newer version of rlang might help?