openpanel/documentation/docs/articles/domains/how-to-fix-Failed-to-Make-Connection-to-Backend-httpd-UDS.md

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# Failed to Make Connection to Backend: httpd-UDS
When loading a domain within a browser, you may receive the following error:
```
503 error
Service Unavailable
```
Check the error log for the webserver:
- For Nginx:
```bash
tail -f /var/log/nginx/error.log
```
- For Apache:
```bash
tail -f /var/log/apache2/error.log
```
Upon checking error log, the following error is appended:
> [Mon Jan 15 11:23:58.525837 2024] [proxy:error] [pid 63085:tid 140529576699456] (2)No such file or directory: AH02454: FCGI: attempt to connect to Unix domain socket /run/php/phpphp8.2-fpm.sock (*) failed
In the error itself we can see that the domain is using invalid path to php-fpm service: **/run/php/phpphp8.2-fpm.sock** instead of **/run/php/php8.2-fpm.sock**
To fix this, from _OpenPanel > Domains_ click on the three dots for the domain and click on "_Edit VirtualHosts_"
![screenshot](https://i.postimg.cc/fRQqQSSb/2024-01-15-11-48.png)
then edit the _SetHandler_ part and make sure that the php path does not contain phpphp but just php
![screenshot](https://i.postimg.cc/XYcbRbJT/2024-01-15-11-50.png)
click on Save and from _Server Settings > Service Status_ restart Nginx/Apache service to apply changes.
![screenshot](https://i.postimg.cc/D08GN6PM/2024-01-15-11-52.png)