'Call to undefined function Illuminate\Encryption\openssl_cipher_iv_length()'

[andrewmung]

Hi All,

Recently I have installed Laravel 8 but 127.0.0.1:8000 (it is defined by laravel artisan serve) shown error message as below:

'Call to undefined function Illuminate\Encryption\openssl_cipher_iv_length()'

In order to solve the above problem, the working items were done towards uniform server in the following:

1. extension=openssl  was uncommented
2. Adding dll files to directory : "... \core\php74\"  included : libcrypto-1_1-x64.dll, libssl-1_1-x64.dll, libeay32.dll, ssleay32.dll
3. Adding dll files to directory: "... \core\php74\extension\" included :  php_mcrypt.dll , and also added extension=mcrypt
4. I checked PATH included :  "... \core\php74\extension" and  "... \core\php74\ and ...\core\apache2\conf\openssl.cnf" and "...\core\apache2\bin\" and "...\core\openssl\openssl.cnf"
5. Runing PHP file  : <?php $method = 'AES-128-CBC'; $ivlen = openssl_cipher_iv_length($method); echo $ivlen; ?> and the result is OK to proof that openssl is normal

But it is too upset that I do not know why openssl function is undefined when it is to run under Laravel 8 artisan serve

Attached please find the screenshot of "127.0.0.1:8000" error message 

If you have any idea,  would you be kind enough that please advise what I can do to solve the above problem

Thank you for your kind attention

Andrew