Step 1: Readiness Check Error! You need to resolve these issues to continue.

[putra_irawan]

I'm doing the installer in the manage module if I run enable, when Step 1: Readiness Check
is running, an error appears below : PHP Settings Check *

For additional assistance, see PHP settings check help .

Need Help?

PHP Extension Help

PHP Extensions Check

missing PHP extensions. Hide detail

The best way to resolve this is to install the correct missing extensions. The exact fix depends on our server, your host, and other system variables.
Our PHP extension help can get you started.

For additional assistance, contact your hosting provider.

* - In some cases, you might have two PHP configuration files: one for the PHP command line and for the web server. If so, make the change in both php.ini files. For details, see the php.ini reference.

I have increased memory_limit to 2500M and always_populate_raw_post_data = -1, still experiencing errors

[firoz786]

It seems some PHP extensions are missing. You didn't mentioned PHP extension missed here. You need to install missing extension on your system(From CMD in windows and from TERMINAL in Linux) in your system then install magento again.

[putra_irawan]

is there an example ? system Os Windows

[theMageComp]

Hello @putra_irawan 

Seems php extensions are missing, see the list what are you missing and follow the solution mentioned below,

If you are working on localhost using XAMPP 

https://stackoverflow.com/questions/33869521/how-can-i-enable-php-extension-intl

For linux/ubuntu

https://stackoverflow.com/questions/24351260/how-to-check-which-php-extensions-have-been-enabled-dis...

[putra_irawan]

I have tried to follow this but there is still an error with the same, is there another solution?

https://stackoverflow.com/questions/33869521/how-can-i-enable-php-extension-intl

[putra_irawan · Accepted solution]

[putra_irawan · Accepted solution]

Open terminal and enter the following line in the terminal.

 cd <magento_root_directory>

then execute the following 3 commands in terminal.

php bin/magento cron:run

php update/cron.php

php bin/magento setup:cron:run

Then try to install the module from magento 2.3 admin panel.