"An error occured when executing the cache:clear --no-warmup" while installing symfony-cmf-standard

It gives error as when we use the command,

composer.phar create-project symfony-cmf/standard-edition symfony-cmf-standard/ --stability=dev

It creates symfony-cmf-standard folder as a project folder and starts installing dependencies but in between it tries to clear cache using

php app/console cache:clear

But as the current location is outside of the project folder it can not locate app/console so it fails.

Now if we change the directory to inside the project folder and clear cache manually by using command

php app/console cache:clear 

It clears cache and then we need to again update dependencies using

php composer.phar update 

It worked for me.

I've got an error cut also in the same case: "...PHP Fatal error: Class 'DOMDocument' not found..."

Works after:

1. install php-xml (can be optionally compiled with this option I suppose)
2. set date.timezone in /etc/php.ini

On my side with php7.0 I had to install :

• php7.0-mbstring
• php7.0-xml

Then it worked :)