psr 4 - psr4 changes after upgrade have class not found symfony 2,4 -> 2,8 -

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i use "symfony/symfony": "~2.4", , configuration 

"autoload": {         "psr-0": { "": "src/", "mea":"vendor/", "mea":"vendor/mea/corebundle/", "place":"vendor/mea/"  }     },

i create new project "symfony/symfony": "2.8.x-dev",

first error 

[invalidargumentexception]                                        non-empty psr-4 prefix must end namespace separator.

so add

 "autoload": {             "psr-4": { "": "src/","mea\\":"vendor/", "mea\\":"vendor/mea/corebundle/", "symfonystandard\\": "app/symfonystandard/" }         },

and have classnotfoundexception

when try access classes in folder

example : 

 $a = \mea\pattern\view::inst();

give 

attempted load class "view" namespace "mea\pattern". did forget "use" statement "mea\pattern\view"? 500 internal server error - classnotfoundexception

how fix ?

the namespace configured "mae" (camel cased), in code use "mae" (lower cased). psr-4 case sensitive:

all class names must referenced in case-sensitive fashion.


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