'Loading view file (created by mkview!) not being sourced/loaded by an autocommand event

Refering to this post load views from specific files I'd like to retain/keep all my folds when copying my files to different machines by saving and than sourcing the viewfile automatically by an autocommand.

augroup WriteAndSourceViews
    autocmd!

    " this one here works perfect fine and every time the mkview command is executed and the file created
    autocmd BufWritePre *.* execute "mkview! " . expand('<afile>:p:h') . "/." . expand('<afile>:t') . ".vimview"

    " this command doesn't work with any of the events... manually by command line it work fine though...
    autocmd BufRead,BufWinEnter,BufReadPost,FilereadPost *.* execute "silent! source " . expand('%:p:h') . "/." . expand('%:t') . ".vimview"
augroup END

Why no of the events for sourcing the file are working?

vim


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