Android Question Runtime & Compiling Error

B4A Version: 8.50
Parsing code. (0.00s)
Building folders structure. (0.02s)
Compiling code. (0.05s)
Compiling layouts code. (0.00s)
Organizing libraries. (0.00s)
Generating R file. Error
invalid resource directory name: D:\Mind\Learning\Android\TestingProject\Sample\Objects\bin\extra\res1\res/values-b+sr+Latn