I'm trying to use the Haskell extension with VS Code which, is my understanding, uses ghcide. When I built ghcide, I had the resolver in the stack.yaml set to "nightly-2020-09-02". Associated with this is GHC 8.10.2. When I first created my project I had the resolver set to something like lts-14.20. Associated with this is GHC something like 8.6.5. Later I changed my project resolver to nightly-2020-09-02, same as ghcide. But I'm still getting this error. Perhaps I haven't properly rebuilt my project using the new resolver? Dennis