Question Upgrade Mariadb to 10.5

[Scha]

I have performed an upgrade according to the following instructions.

 How to upgrade MySQL 5.5 to 5.6/5.7 or MariaDB 5.5 to 10.x on Linux?

Applicable to: Plesk for Linux Question How to upgrade MySQL 5.5 to 5.6/5.7 or MariaDB 5.5 to 10.X on Linux? Answer This article provides instructions for upgrading MySQL 5.5 to 5.6/5.7 and Mari...

support.plesk.com

In principle the upgrade worked
At the end there are two commands:
# plesk bin service_node --update local
# plesk sbin packagemng -sdf
This resulted in the following error message

web:~# plesk bin service_node --update local
PHP Warning: XMLWriter::text() expects parameter 1 to be string, array given; File: /opt/psa/admin/plib/api-rpc/ExpandXMLLib.php, Line: 203

PHP Warning: XMLWriter::text() expects parameter 1 to be string, array given in /opt/psa/admin/plib/api-rpc/ExpandXMLLib.php on line 203
PHP Warning: syntax error, unexpected '^' in Unknown on line 1
; File: /opt/psa/admin/plib/PhpSettings/Config.php, Line: 677

PHP Warning: syntax error, unexpected '^' in Unknown on line 1
in /opt/psa/admin/plib/PhpSettings/Config.php on line 677
PHP Warning: syntax error, unexpected '$' in Unknown on line 1
; File: /opt/psa/admin/plib/PhpSettings/Config.php, Line: 677

Many thanks for the help

 

[Kulturmensch]

I receive the same warning:
PHP Warning: XMLWriter::text() expects parameter 1 to be string, array given; File: /opt/psa/admin/plib/api-rpc/ExpandXMLLib.php, Line: 203
Anybody here for explanation?