Using GLPKSolverLP

returned this error message for the update:
METADATA cannot be updated. Resolve problems manually in C:\Users\raquel.santos\Documents\JuliaPro-0.6.2.1\pkgs-0.6.2.1\v0.6\METADATA.

And for the Pkg.status, returned this error message:

GitError(Code:ENOTFOUND, Class:Repository, Could not find repository from ‘DocStringExtensions’)