PHP Fatal error: Uncaught Error: Call to undefined method Symfony\Component\Process about image-optimize-command

[opicron]

When I undo the last patch and replace:

$process = Process::fromShellCommandline($command);

With:

$process = new Process($command);

The script works again..

[eboy79]

thank you opicron!
$process = new Process($command);

[tangrufus]

Solution found: Install wp cli via composer instead of phar.

This is because phar bundles with symfony/process v2 and v2 is always loaded (even though a newer version of it is installed).

Using composer resolve the issue.

For those using Trellis, check out https://github.com/ItinerisLtd/trellis_install_wp_cli_via_composer

Re-open this issue if you have a better solution.

[tangrufus]

Although I see Installing symfony/process (v4.2.3), can you confirm symfony/process v4.2.3 is loaded?

Related:

• spatie/image-optimizer#82
• spatie/image-optimizer@83cbef0#diff-b00ecbef43b571343ac6639739b14f72

Tips:
WP CLI doesn't provide easy way to check it. My suggestion would be looking into your wp package path. You will find the underlying composer installation there.

[opicron]

I am unsure how to check if the symfony/process is loaded. However checking the /vendor/symfony/process/ path the php scripts are installed.

Running the install command an second time gives no warnings or errors. I assume the correct version is installed.

EDIT: The process component Changlog states 4.2.0.

I manually downloaded symfony/process 4.2.3 and replaced the old version. I uploaded an new image and tried to optimize it but it fails with the same error.

[artur-swoboda]

This is still a valid error :(

But can be fixed with changes from above.

[Redjam]

Error is still valid. The fix proposed by @opicron works well. Is it possible du push it in the branch for future users?

[jbonlinea]

Hi guys

I bumped into the same error as you

could you please detail what changes have you made ?

When I undo the last patch and replace:

$process = Process::fromShellCommandline($command);

With:

$process = new Process($command);

The script works again..

what last patch, and what file have you edited ?

Thank's

EDIT

the file to edit is
/.wp-cli/packages/vendor/spatie/image-optimizer/src/OptimizerChain.php:97

It works indeed, but I haven't "downgraded to last patch (which is ?)

[Soullighter]

I hade same error, after replace with @opicron suggestions everything is working fine
Thank you @jbonlinea for directing us to the file 👍

[tangrufus]

Which version you installed?
Is it 482d9c9 ?

[Soullighter]

Which version you installed?
Is it 482d9c9 ?

You mean on composer.json?
How to check version?

[tangrufus]

Finally found the issue - wp cli phar bundles symfony/process v2 which got loaded no matter which versions we specified in our (and our dependencies') composer.json.

Solution to be investigated. Leave a comment if you have any suggestions.

[tangrufus]

more info:

$ wp shell

wp> $reflector = new \ReflectionClass('Symfony\Component\Process\Process');
=> object(ReflectionClass)#2801 (1) {
  ["name"]=>
  string(33) "Symfony\Component\Process\Process"
}
wp> echo $reflector->getFileName();
phar:///usr/bin/wp/vendor/symfony/process/Process.php
wp>

[tangrufus]

spatie/image-optimizer requires symfony/process ^4.2|^5.0.

WP CLI bundle installs symfony/process v2.8.52.

Conclusion: WP CLI bundle won't work. Install WP CLI via composer instead. See: requirements

[ibrahimhajjaj]

When I undo the last patch and replace:

$process = Process::fromShellCommandline($command);

With:

$process = new Process($command);

The script works again..

Step by step for others who don't know

nano /root/.wp-cli/packages/vendor/spatie/image-optimizer/src/OptimizerChain.php
CTRL + W and paste this Process::fromShellCommandline($command) and press enter
changer it with new Process($command)

[tangrufus]

Don't do that.
Install WP CLI via composer instead. See: requirements

[ibrahimhajjaj]

Don't do that.
Install WP CLI via composer instead. See: requirements

I've tried that but didn't fix the problem for me.

[tangrufus]

Editing vendor code won't work neither.

Send bug report if you are facing the same issue with wp cli installed via composer.