# Switch to Composer Errors: Cannot Fork / in Process.php line 355: Unable to launch a new process **URL:** \ **Category:** Mautic 4 Install/Upgrade Support\ **Created:** [June 21, 2022, 7:14pm UTC](https://forum.mautic.org/t/switch-to-composer-errors-cannot-fork-in-process-php-line-355-unable-to-launch-a-new-process/24530 "2022-06-21T19:14:54Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![georg1](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/georg1/32/6724_2.png) [@georg1](https://forum.mautic.org/u/georg1)\ **Post date:** [June 21, 2022, 7:14pm UTC](https://forum.mautic.org/t/switch-to-composer-errors-cannot-fork-in-process-php-line-355-unable-to-launch-a-new-process/24530/1 "2022-06-21T19:14:54Z")
**Your software** _My PHP version is_ : 7.4.30 _My MySQL/MariaDB version is_ (delete as applicable): MySQL version 8.0 HI all, I’m trying to switch to composer on Mautic 4.3.1 as described here: > **[How to switch to Composer](https://docs.mautic.org/en/setup/switch-to-composer)** > > . Up until Mautic 4, users could download Mautic as a ZIP file and install it on any PHP server. However, many users were running into installation and update errors, many of which caused considerable frustration and in some cases, significant... yet getting the following errors when running composer using: /usr/local/bin/php-cli-74 /usr/bin/composer create-project mautic/recommended-project:^4 mautic-new --no-interaction Erros messages after a while, please advice. Many thanks! Failed to extract league/flysystem-cached-adapter: (2) ‘/usr/bin/unzip’ -qq ‘/home/jm840nap/www/home/mautic-new/vendor/composer/tmp-80f8b8484ce011fc705534e32631c4a2’ -d ‘/home/jm840nap/www/home/mautic-new/vendor/composer/abe33481’ sh: 1: Cannot fork ``` The archive may contain identical file names with different capitalization (which fails on case insensitive filesystems) Unzip with unzip command failed, falling back to ZipArchive class ``` 0/224 [\>---------------------------] 0% Failed to extract symfony/deprecation-contracts: (2) ‘/usr/bin/unzip’ -qq ‘/home/jm840nap/www/home/mautic-new/vendor/composer/tmp-bcf7af95c2751765de59e63d1a5b0532’ -d ‘/home/jm840nap/www/home/mautic-new/vendor/composer/0eee14e7’ sh: 1: Cannot fork ``` The archive may contain identical file names with different capitalization (which fails on case insensitive filesystems) Unzip with unzip command failed, falling back to ZipArchive class ``` 104/224 [=============\>--------------] 46% Failed to extract voku/stop-words: (2) ‘/usr/bin/unzip’ -qq ‘/home/jm840nap/www/home/mautic-new/vendor/composer/tmp-aeda12a4073854ac6952110b1a89ae33’ -d ‘/home/jm840nap/www/home/mautic-new/vendor/composer/fed2699a’ sh: 1: Cannot fork ``` The archive may contain identical file names with different capitalization (which fails on case insensitive filesystems) Unzip with unzip command failed, falling back to ZipArchive class ``` 136/224 [=================\>----------] 60% Failed to extract symfony/validator: (2) ‘/usr/bin/unzip’ -qq ‘/home/jm840nap/www/home/mautic-new/vendor/composer/tmp-a23217c6e0f180d95cc8ca54d13270e0’ -d ‘/home/jm840nap/www/home/mautic-new/vendor/composer/f583a4ec’ sh: 1: Cannot fork ``` The archive may contain identical file names with different capitalization (which fails on case insensitive filesystems) Unzip with unzip command failed, falling back to ZipArchive class ``` 170/224 [=====================\>------] 75% Install of sensio/framework-extra-bundle failed Install of noxlogic/ratelimit-bundle failed Install of mrclay/minify failed Install of giggsey/libphonenumber-for-php failed Install of misd/phone-number-bundle failed Install of mautic/core-lib failed Install of mautic/grapes-js-builder-bundle failed Install of mautic/plugin-citrix failed Install of mautic/plugin-clearbit failed Install of mautic/plugin-cloudstorage failed Install of mautic/plugin-crm failed 187/224 [=======================\>----] 83% Install of mautic/plugin-focus failed Install of mautic/plugin-fullcontact failed Install of mautic/plugin-gmail failed Install of mautic/plugin-outlook failed Install of mautic/plugin-social failed Install of mautic/plugin-tagmanager failed Install of mautic/plugin-zapier failed Install of mautic/theme-aurora failed Install of mautic/theme-blank failed Install of mautic/theme-brienz failed Install of mautic/theme-cards failed Install of mautic/theme-coffee failed Install of mautic/theme-confirmme failed Install of mautic/theme-fresh-center failed Install of mautic/theme-fresh-fixed failed Install of mautic/theme-fresh-left failed Install of mautic/theme-fresh-wide failed Install of mautic/theme-goldstar failed Install of mautic/theme-mauve failed Install of mautic/theme-nature failed Install of mautic/theme-neopolitan failed Install of mautic/theme-oxygen failed Install of mautic/theme-paprika failed Install of mautic/theme-skyline failed Install of mautic/theme-sparse failed Install of mautic/theme-sunday failed Install of mautic/theme-trulypersonal failed Install of mautic/theme-vibrant failed 224/224 [============================] 100% In Process.php line 355: Unable to launch a new process. create-project [-s|–stability STABILITY] [–prefer-source] [–prefer-dist] [–prefer-install PREFER-INSTALL] [–repository REPOSITORY] [–repository-url REPOSITORY-URL] [–add-repository] [–dev] [–no-dev] [–no-custom-installers] [–no-scripts] [–no-progress] [–no-secure-http] [–keep-vcs] [–remove-vcs] [–no-install] [–ignore-platform-req IGNORE-PLATFORM-REQ] [–ignore-platform-reqs] [–ask] [–] [[ []]] ---
**Author:** ![georg1](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/georg1/32/6724_2.png) [@georg1](https://forum.mautic.org/u/georg1)\ **Post date:** [June 27, 2022, 7:57pm UTC](https://forum.mautic.org/t/switch-to-composer-errors-cannot-fork-in-process-php-line-355-unable-to-launch-a-new-process/24530/2 "2022-06-27T19:57:03Z")
Anybody? I’m not sure whether I updated Mautic 4.3 to composer or it failed, according to the messages above? Many thanks. ---
**Author:** ![techbill](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/techbill/32/8325_2.png) [@techbill](https://forum.mautic.org/u/techbill)\ **Post date:** [June 27, 2022, 8:16pm UTC](https://forum.mautic.org/t/switch-to-composer-errors-cannot-fork-in-process-php-line-355-unable-to-launch-a-new-process/24530/3 "2022-06-27T20:16:16Z")
4.3.1 requires 7.4 … I noticed you are using 8.0. Maybe that why you are experiencing this errors? I am not sure either ---
**Author:** ![georg1](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/georg1/32/6724_2.png) [@georg1](https://forum.mautic.org/u/georg1)\ **Post date:** [June 27, 2022, 9:06pm UTC](https://forum.mautic.org/t/switch-to-composer-errors-cannot-fork-in-process-php-line-355-unable-to-launch-a-new-process/24530/4 "2022-06-27T21:06:15Z")
When I go to mautic/system-info, it states mysqlnd 7.4.30. As seen from the commands above, I’m invoking with [quote=“georg1, post:1, topic:24530”] /usr/local/bin/php-cli-74 [/quote] so I suppose this should be ok? ---
**Author:** ![techbill](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/techbill/32/8325_2.png) [@techbill](https://forum.mautic.org/u/techbill)\ **Post date:** [June 27, 2022, 9:08pm UTC](https://forum.mautic.org/t/switch-to-composer-errors-cannot-fork-in-process-php-line-355-unable-to-launch-a-new-process/24530/5 "2022-06-27T21:08:43Z")
Never mind … my mistake … I was looking at MySQL version by accident … I need new glasses Yeah your on php 7.4 when I looked again. Sorry about that. Not familiar with this error … ---
**Author:** ![georg1](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/georg1/32/6724_2.png) [@georg1](https://forum.mautic.org/u/georg1)\ **Post date:** [June 27, 2022, 9:10pm UTC](https://forum.mautic.org/t/switch-to-composer-errors-cannot-fork-in-process-php-line-355-unable-to-launch-a-new-process/24530/6 "2022-06-27T21:10:58Z")
something to do with the unzip command according to the errors? ---
**Author:** ![techbill](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/techbill/32/8325_2.png) [@techbill](https://forum.mautic.org/u/techbill)\ **Post date:** [June 27, 2022, 9:15pm UTC](https://forum.mautic.org/t/switch-to-composer-errors-cannot-fork-in-process-php-line-355-unable-to-launch-a-new-process/24530/7 "2022-06-27T21:15:06Z")
Did some googling on this error … Try this command composer clearcache Then run installation again ---
**Author:** ![georg1](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/georg1/32/6724_2.png) [@georg1](https://forum.mautic.org/u/georg1)\ **Post date:** [June 28, 2022, 7:13pm UTC](https://forum.mautic.org/t/switch-to-composer-errors-cannot-fork-in-process-php-line-355-unable-to-launch-a-new-process/24530/8 "2022-06-28T19:13:58Z")
OK, will try that and get back here very soon. ---
**Author:** ![georg1](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/georg1/32/6724_2.png) [@georg1](https://forum.mautic.org/u/georg1)\ **Post date:** [June 29, 2022, 11:33am UTC](https://forum.mautic.org/t/switch-to-composer-errors-cannot-fork-in-process-php-line-355-unable-to-launch-a-new-process/24530/9 "2022-06-29T11:33:04Z")
Ok, I did a clearcache which didn’t resolve it first. I deleted all folders, re-ran the installation using the **default** **/mautic** directory as argument in the recommended-project command. Before that, I moved the working /mautic installation to /mautic-old (so as opposed to what the update docs say, I moved the folder before invocing the recommended-project command).