Warning "Array and string offset access syntax with curly braces is deprecated"

Hello,

installing FD 1.4 on CentOS 7, running the setup. We see this warning on top of the page:

Deprecated: Array and string offset access syntax with curly braces is deprecated in /usr/share/fusiondirectory/include/class_standAlonePage.inc on line 262

# rpm -qa | grep fusion
fusiondirectory-schema-1.4-1~jenkinsbuild948.noarch
fusiondirectory-1.4-1~jenkinsbuild948.noarch
fusiondirectory-plugin-personal-1.4-1~jenkinsbuild948.noarch
fusiondirectory-plugin-dsa-schema-1.4-1~jenkinsbuild948.noarch
fusiondirectory-plugin-ppolicy-1.4-1~jenkinsbuild948.noarch
fusiondirectory-plugin-dsa-1.4-1~jenkinsbuild948.noarch
fusiondirectory-plugin-personal-schema-1.4-1~jenkinsbuild948.noarch
fusiondirectory-plugin-mail-1.4-1~jenkinsbuild948.noarch
fusiondirectory-plugin-mail-schema-1.4-1~jenkinsbuild948.noarch
fusiondirectory-plugin-ppolicy-schema-1.4-1~jenkinsbuild948.noarch
fusiondirectory-plugin-webservice-1.4-1~jenkinsbuild948.noarch
fusiondirectory-plugin-webservice-schema-1.4-1~jenkinsbuild948.noarch
fusiondirectory-selinux-1.4-1~jenkinsbuild948.noarch

# php -version
PHP 7.4.10 (cli) (built: Sep  1 2020 13:58:08) ( NTS )
Copyright (c) The PHP Group
Zend Engine v3.4.0, Copyright (c) Zend Technologies