Source: https://support.plesk.com/hc/en-us/articles/360003364874-All-requests-containing-icons-are-redirected-to-the-usr-share-httpd-icons-or-to-usr-share-apache2-icons-folder

https://support.plesk.com/hc/en-us/articles/360003364874-All-requests-containing-icons-are-redirected-to-the-usr-share-httpd-icons-or-to-usr-share-apache2-icons-folder

in meteotemplate docker icons are redirected to

Alias /icons/ "/usr/share/apache2/icons/"
vi /etc/apache2/mods-available/alias.conf
comment out
Alias /icons/ "/usr/share/apache2/icons/"

reload apache

service apache2 reload