Error on installation using php 7.4.4

[elaur]

How Shlink is set-up

• Shlink Version: 2.2.1
• PHP Version: 7.4.4
• How do you serve Shlink: Self-hosted OpenLiteSpeed
• Database engine used: MariaDB
• OS: Debian 10

Summary

sudo -u lsadm /usr/local/lsws/lsphp74/bin/lsphp ./install
PHP Fatal error: strict_types declaration must be the very first statement in the script in /usr/local/lsws/mydomain.cc/html/bin/install on line 3

Fatal error: strict_types declaration must be the very first statement in the script in /usr/local/lsws/mydomain.cc/html/bin/install on line 3

Any solutions to fix it?

[acelaya]

I'm not sure what this lsphp thing is, but it looks like it is performing some kind of code style check.

I would recommend you running Shlink with a regular PHP binary. That will solve the problem.

[acelaya]

Hey @elaur

I have done a bit of research, and it looks like this error could be caused by the fact that this is a CLI script and stats with the shebang.

Could you try removing the #!/usr/bin/env php line at the beginning of the install script and see if it helps?

[elaur]

Hmm, got this

sudo -u lsadm /usr/local/lsws/lsphp74/bin/lsphp ./install

Welcome to Shlink!!
This tool will guide you through the installation process.

DATABASE

Select database type [MySQL]:
[0] MySQL
[1] MariaDB
[2] PostgreSQL
[3] MicrosoftSQL
[4] SQLite

PHP Warning: Use of undefined constant STDIN - assumed 'STDIN' (this will throw an Error in a future version of PHP) in /usr/local/lsws/mywebsite.cc/html/vendor/symfony/console/Helper/QuestionHelper.php on line 107

Warning: Use of undefined constant STDIN - assumed 'STDIN' (this will throw an Error in a future version of PHP) in /usr/local/lsws/mywebsite.cc/html/vendor/symfony/console/Helper/QuestionHelper.php on line 107
PHP Warning: feof() expects parameter 1 to be resource, string given in /usr/local/lsws/mywebsite.cc/html/vendor/symfony/console/Helper/QuestionHelper.php on line 254

Warning: feof() expects parameter 1 to be resource, string given in /usr/local/lsws/mywebsite.cc/html/vendor/symfony/console/Helper/QuestionHelper.php on line 254
PHP Warning: fread() expects parameter 1 to be resource, string given in /usr/local/lsws/mywebsite.cc/html/vendor/symfony/console/Helper/QuestionHelper.php on line 255

Warning: fread() expects parameter 1 to be resource, string given in /usr/local/lsws/mywebsite.cc/html/vendor/symfony/console/Helper/QuestionHelper.php on line 255
PHP Fatal error: Uncaught TypeError: Return value of Shlinkio\Shlink\Installer\Config\Option\Database\DatabaseUserConfigOption::askRequired() must be of the type string, null returned in /usr/local/lsws/mywebsite.cc/html/vendor/shlinkio/shlink-installer/src/Util/AskUtilsTrait.php:20
Stack trace:
#0 /usr/local/lsws/mywebsite.cc/html/vendor/shlinkio/shlink-installer/src/Config/Option/Database/DatabaseUserConfigOption.php(22): Shlinkio\Shlink\Installer\Config\Option\Database\DatabaseUserConfigOption->askRequired()
#1 /usr/local/lsws/mywebsite.cc/html/vendor/shlinkio/shlink-installer/src/Config/ConfigGenerator.php(58): Shlinkio\Shlink\Installer\Config\Option\Database\DatabaseUserConfigOption->ask()
#2 /usr/local/lsws/mywebsite.cc/html/vendor/shlinkio/shlink-installer/src/Command/InstallCommand.php(77): Shlinkio\Shlink\Installer\Config\ConfigGenerator->generateConfigInteractively()
#3 /usr/local/lsws/mywebsite.cc/html/vendor/symfony/console/Command/Command.php(255): Shlinkio\Shlink\Installer\Command\InstallCommand->execute()
#4 /usr/local/lsws/mywebsite.cc/htm in /usr/local/lsws/mywebsite.cc/html/vendor/shlinkio/shlink-installer/src/Util/AskUtilsTrait.php on line 20

Fatal error: Uncaught TypeError: Return value of Shlinkio\Shlink\Installer\Config\Option\Database\DatabaseUserConfigOption::askRequired() must be of the type string, null returned in /usr/local/lsws/mywebsite.cc/html/vendor/shlinkio/shlink-installer/src/Util/AskUtilsTrait.php:20
Stack trace:
#0 /usr/local/lsws/mywebsite.cc/html/vendor/shlinkio/shlink-installer/src/Config/Option/Database/DatabaseUserConfigOption.php(22): Shlinkio\Shlink\Installer\Config\Option\Database\DatabaseUserConfigOption->askRequired()
#1 /usr/local/lsws/mywebsite.cc/html/vendor/shlinkio/shlink-installer/src/Config/ConfigGenerator.php(58): Shlinkio\Shlink\Installer\Config\Option\Database\DatabaseUserConfigOption->ask()
#2 /usr/local/lsws/mywebsite.cc/html/vendor/shlinkio/shlink-installer/src/Command/InstallCommand.php(77): Shlinkio\Shlink\Installer\Config\ConfigGenerator->generateConfigInteractively()
#3 /usr/local/lsws/mywebsite.cc/html/vendor/symfony/console/Command/Command.php(255): Shlinkio\Shlink\Installer\Command\InstallCommand->execute()
#4 /usr/local/lsws/mywebsite.cc/htm in /usr/local/lsws/mywebsite.cc/html/vendor/shlinkio/shlink-installer/src/Util/AskUtilsTrait.php on line 20

[acelaya]

It's hard to say, but it looks like everything is related with the PHP variation you are using.

I would recommend using a regular PHP distribution, as some of these errors are happening on third party code that I will not be able to change.

I will close this for now, and consider supporting lite speed PHP in the future.