Sometimes you will encounter ext-intl * is missing while you install PHP applications. You can fix it in the following ways:

Solution 1 - Install the missing extension

Solution 2 - Enable extension=intl in php.ini file

Solution 3 - Install PHP mbstring

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Solution 1 - Install the missing extension

Install the missing extension with the following command this should solve 80% of the times

sudo apt-get install php7.4-intl

NOTE: Make sure to observe the php7.4 version in the above command. Replace the php version respectively.

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