# Critical Error - Urgent Help Needed Please

**URL:** <https://forum.mautic.org/t/critical-error-urgent-help-needed-please/21237>\
**Category:** Product Support\
**Created:** [October 12, 2021, 1:39pm UTC](https://forum.mautic.org/t/critical-error-urgent-help-needed-please/21237 "2021-10-12T13:39:37Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![mikew](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/mikew/32/5156_2.png) [@mikew](https://forum.mautic.org/u/mikew)\
**Post date:** [October 12, 2021, 1:39pm UTC](https://forum.mautic.org/t/critical-error-urgent-help-needed-please/21237/1 "2021-10-12T13:39:37Z")

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Hi All. We have just had an instance go down, tried clearing the cache, tried chowning the directory and still getting erorr.  
When I run cache:clear --env-prod I get the following:  
PHP Parse error: syntax error, unexpected ‘=\>’ (T\_DOUBLE\_ARROW), expecting ‘)’ in /var/www/mautic/app/bundles/NotificationBundle/EventListener/CampaignSubscriber.php on line 142

This is one of the errors from the logs:  
2021/10/12 16:37:20 [error] 1231#1231: \*430 FastCGI sent in stderr: “PHP message: Symfony\Component\Debug\Exception\FatalThrowableError: Parse error: syntax error, unexpected ‘=\>’ (T\_DOUBLE\_ARROW), expecting ‘)’ - in file /var/www/mautic/app/bundles/NotificationBundle/EventListener/CampaignSubscriber.php - at line 142” while reading response header from upstream, client: 80.246.137.51, server: amautic, request: “GET /mtc.js HTTP/1.1", upstream: “fastcgi://unix:/run/php/php7.4-fpm.sock:“, host: “maiutic”, referrer: “[https://www.domain.co.il/r/מסעדת%20רוקפור%20דימונה”](https://www.domain.co.il/r/%D7%9E%D7%A1%D7%A2%D7%93%D7%AA%20%D7%A8%D7%95%D7%A7%D7%A4%D7%95%D7%A8%20%D7%93%D7%99%D7%9E%D7%95%D7%A0%D7%94%E2%80%9D)

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**Author:** ![EJL](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/ejl/32/12155_2.png) [@EJL](https://forum.mautic.org/u/EJL)\
**Post date:** [October 12, 2021, 4:28pm UTC](https://forum.mautic.org/t/critical-error-urgent-help-needed-please/21237/2 "2021-10-12T16:28:15Z")

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Hey @mikew is this a new or existing install?

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**Author:** ![mikew](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/mikew/32/5156_2.png) [@mikew](https://forum.mautic.org/u/mikew)\
**Post date:** [October 12, 2021, 5:04pm UTC](https://forum.mautic.org/t/critical-error-urgent-help-needed-please/21237/3 "2021-10-12T17:04:12Z")

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existing install 3.3.x. Very big instance, a few integrations. It just started giving these errors all of a sudden.  
Luckily I had a backup of the files from yesterday so what I did was unpack them in a different directory, updated my nginx to point to this directory and everything is working.

However I do not know what caused this or how to fix it…