Cannot redeclare normalizer_normalize() #38248
Description
I tried to install own cloud on my raspberry pi, however the webpage never loads. Looking at the Apache2 log I found this:
[Thu Dec 24 16:05:12.557991 2020] [mpm_prefork:notice] [pid 17187] AH00163: Apache/2.4.38 (Raspbian) configured -- resuming normal operations
[Thu Dec 24 16:05:12.558207 2020] [core:notice] [pid 17187] AH00094: Command line: '/usr/sbin/apache2'
[Thu Dec 24 16:05:20.346612 2020] [php7:error] [pid 17188] [client 176.205.133.161:54454] PHP Fatal error: Cannot redeclare normalizer_normalize() (previously declared in /var/www/cloud.althafar.me/public_html/lib/composer/symfony/polyfill-intl-normalizer/bootstrap.php:18) in /var/www/cloud.althafar.me/public_html/lib/composer/patchwork/utf8/src/Patchwork/Utf8/Bootup/intl.php on line 21, referer: http://cloud.althafar.me/
[Thu Dec 24 16:11:52.088252 2020] [php7:error] [pid 17476] [client 176.205.133.161:54462] PHP Fatal error: Cannot redeclare normalizer_normalize() (previously declared in /var/www/cloud.althafar.me/public_html/lib/composer/symfony/polyfill-intl-normalizer/bootstrap.php:18) in /var/www/cloud.althafar.me/public_html/lib/composer/patchwork/utf8/src/Patchwork/Utf8/Bootup/intl.php on line 21, referer: http://cloud.althafar.me/
[Thu Dec 24 16:14:21.768790 2020] [php7:error] [pid 17492] [client 176.205.133.161:54468] PHP Fatal error: Cannot redeclare normalizer_normalize() (previously declared in /var/www/cloud.althafar.me/public_html/lib/composer/symfony/polyfill-intl-normalizer/bootstrap.php:18) in /var/www/cloud.althafar.me/public_html/lib/composer/patchwork/utf8/src/Patchwork/Utf8/Bootup/intl.php on line 21, referer: http://cloud.althafar.me/
Expected behaviour
OwnCloud setup should show on the browser.
Actual behaviour
HTTP Error 500
Server configuration
Operating system: Raspberry Pi OS
Web server: Apache 2.4.38
Database: MySQL 15.1
PHP version: 7.3.19
ownCloud version: 10.6
Updated from an older ownCloud or fresh install: Fresh install
Where did you install ownCloud from: From the owncloud website