# 502 error after upgrade to v3.3.0

**URL:** <https://community.passbolt.com/t/502-error-after-upgrade-to-v3-3-0/4376>\
**Category:** Installation Issues\
**Created:** [October 31, 2021, 10:56pm UTC](https://community.passbolt.com/t/502-error-after-upgrade-to-v3-3-0/4376 "2021-10-31T22:56:55Z")\
**Posts on this page:** 1\
**Showing post:** 4

<div class="post-metadata">

**Author:** ![AnatomicJC](https://yyz1.discourse-cdn.com/flex031/user_avatar/community.passbolt.com/anatomicjc/32/962_2.png) [@AnatomicJC](https://community.passbolt.com/u/AnatomicJC)\
**Post date:** [November 2, 2021, 3:34pm UTC](https://community.passbolt.com/t/502-error-after-upgrade-to-v3-3-0/4376/4 "2021-11-02T15:34:37Z")

</div>

Thanks for your feedback about your installation issue. I think it can help other users.

By the way, the default with Ubuntu 20.04 is now to use a socket (/run/php/php7.4-fpm.sock) instead of a TCP connection (127.0.0.1:9000).

Another solution is to edit your nginx configuration file and use this socket:

```auto
    fastcgi_pass unix:/run/php/php7.4-fpm.sock;

```

Instead of the TCP connection:

```auto
    fastcgi_pass 127.0.0.1:9000;

```

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_[View the full topic](https://community.passbolt.com/t/502-error-after-upgrade-to-v3-3-0/4376)._