When I try to add or remove any packages or even run Pkg.update() with Julia, I get the following error:
ERROR: resolve is unable to satisfy package requirements. The problem was detected when trying to find a feasible version for package NullableArrays. However, this only means that package NullableArrays is involved in an unsatisfiable or difficult dependency relation, and the root of the problem may be elsewhere.
What does this error message even mean and how can I fix this? Thanks for any help in advance.