After Fedora upgrade to 35 from 33 faced issue under OwnCloud

Can not run OC 10.xxx under php 8.0.xx

Resolved the issue with following steps

Following was already there under /etc/httpd/conf.d/owncloud.conf

# Enable http authorization headers
SetEnvIfNoCase ^Authorization$ “(.+)” HTTP_AUTHORIZATION=$1

<FilesMatch \.(php|phar)$>
    SetHandler "proxy:unix:/var/opt/remi/php74/run/php-fpm/www.sock|fcgi://localhost"
</FilesMatch>

while doing console upgrade using
occ upgrade
problem arises as default php was 8.0

First renamed /usr/bin/php to /usr/bin/php80
then run following command
update-alternatives –install /usr/bin/php php /opt/remi/php74/root/usr/bin/php 74

next occ update was successful