# New Install 27.0.2 on PHP8.1 Archlinux, APCu fails, .well-known warnings

**URL:** <https://help.nextcloud.com/t/new-install-27-0-2-on-php8-1-archlinux-apcu-fails-well-known-warnings/169642>\
**Category:** ℹ️ Support\
**Tags:** apcu, redis\
**Created:** [September 7, 2023, 9:11am UTC](https://help.nextcloud.com/t/new-install-27-0-2-on-php8-1-archlinux-apcu-fails-well-known-warnings/169642 "2023-09-07T09:11:03Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![SchBenedikt](https://help.nextcloud.com/user_avatar/help.nextcloud.com/schbenedikt/32/52761_2.png) [@SchBenedikt](https://help.nextcloud.com/u/SchBenedikt)\
**Post date:** [September 7, 2023, 9:24am UTC](https://help.nextcloud.com/t/new-install-27-0-2-on-php8-1-archlinux-apcu-fails-well-known-warnings/169642/4 "2023-09-07T09:24:37Z")

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This guide has helped both us and others multiple times:

> [@Resolve "/.well-known/caldav"](https://help.nextcloud.com/t/resolve-well-known-caldav/168435/2):
>
> Your web server is not properly configured to resolve “/.well-known/something. Hello @plantarum There may be different variants here, but we use these to solve the problem: We create with sudo nano /etc/apache2/sites-enabled/000-default-le-ssl.conf A new config file and add the following content: \<IfModule mod\_headers.c\> Header always set Strict-Transport-Security "max-age=15552000; includeSubDomains; strict-origin; preload" Redirect 301 /.well-known/carddav /nextcloud/remote.php/dav …

PS: Since all IP addresses are now public in your config file, everyone can see them.  
Maybe you want to remove them?

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_[View the full topic](https://help.nextcloud.com/t/new-install-27-0-2-on-php8-1-archlinux-apcu-fails-well-known-warnings/169642)._