Authentication error on AMI single-server install

Message issue duing single-server install by postConfigure

===== Performing Configuration Setup and MariaDB ColumnStore Startup =====

NOTE: Setting 'NumBlocksPct' to 50%
Setting 'TotalUmMemory' to 25% of total memory.
==== AUTHENTICATING FOR org.freedesktop.systemd1.manage-units ===
Authentication is required to manage system services or units.
Authenticating as: Cloud User (ec2-user)
Password: polkit-agent-helper-1: pam_authenticate failed: Authentication failure

Error occurs when running the following script:

[mariadb-user@ip-172-30-0-35 bin]$ ./syslogSetup.sh install
./syslogSetup.sh: line 102: /tmp/rsyslog.ver: Permission denied

System logging being used: rsyslog

==== AUTHENTICATING FOR org.freedesktop.systemd1.manage-units ===
Authentication is required to manage system services or units.
Authenticating as: Cloud User (ec2-user)
Password: