Package DevTools does not have Media in its dependencies

[hasanOryx]

I got the below error while working with Julia 1.0:

julia> using DevTools, Gadfly
[ Info: Precompiling DevTools [082c7d84-56a0-51bd-aacd-d765ef067c4e]
ERROR: LoadError: ArgumentError: Package DevTools does not have Media in its dependencies:

• If you have DevTools checked out for development and have
  added Media as a dependency but haven't updated your primary
  environment's manifest file, try Pkg.resolve().
• Otherwise you may need to report an issue with DevTools
  Stacktrace:
  [1] require(::Module, ::Symbol) at ./loading.jl:830
  [2] include at ./boot.jl:317 [inlined]
  [3] include_relative(::Module, ::String) at ./loading.jl:1038
  [4] include(::Module, ::String) at ./sysimg.jl:29
  [5] top-level scope at none:2
  [6] eval at ./boot.jl:319 [inlined]
  [7] eval(::Expr) at ./client.jl:389
  [8] top-level scope at ./none:3
  in expression starting at /Users/hasan/.julia/dev/DevTools/src/DevTools.jl:5
  ERROR: Failed to precompile DevTools [082c7d84-56a0-51bd-aacd-d765ef067c4e] to /Users/hasan/.julia/compiled/v1.0/DevTools/aQFWo.ji.
  Stacktrace:
  [1] error(::String) at ./error.jl:33
  [2] macro expansion at ./logging.jl:313 [inlined]
  [3] compilecache(::Base.PkgId, ::String) at ./loading.jl:1184
  [4] macro expansion at ./logging.jl:311 [inlined]
  [5] _require(::Base.PkgId) at ./loading.jl:941
  [6] require(::Base.PkgId) at ./loading.jl:852
  [7] macro expansion at ./logging.jl:311 [inlined]
  [8] require(::Module, ::Symbol) at ./loading.jl:834