Compiling base project's code produces NoneType errors

[Seransei]

Describe the bug

Firstly, compiling with make deps throws an error on wget the compiler-latest.zip file.

Now, with dependencies built, compiling with make maze-en throws an error coming from closurebuilder.py : options.excludes : TypeError: argument of type 'NoneType' is not iterable

To Reproduce

1. Download / clone blockly games
2. Open terminal
3. Run make deps (first error appears here)
   • To fix this you have to :
     1. In Makefile, look for "wget -N https://dl.google.com/closure-compiler/compiler-latest.zip;"

        203 This is a PR I posted to fix it

     2. Replace "compiler-latest.zip" with "compiler-202000719.zip"
4. Run make maze-en
5. Admire NoneType error

Expected behavior

Compile finishes without error an Blockly Maze can be opened on a server

Desktop OS: Win10 Terminal: Cygwin (with adequate packages)

[Seransei]

User Baloneo created #204 with the error message pasted.

[Seransei]

I found a way to go around this problem. I updated my previous PR #203 to take into account my solution. With this updated Makefile you can make deps and make maze-en without errors. Here I assume that the same error was thrown to every blockly-game.