If the compatible JAR file is not placed in the 'lib_ext' folder of Process Studio (in this case, 'mariaDB-java-client-3.5.3.jar'), the issue may occur.

Resolution:
Please follow the below steps to resolve the issue.
We have replace the old jar file from the 'lib_ext' folder of Process Studio and replace with the 'mariaDB-java-client-3.5.3.jar' file.
mariaDB Version: 10.3.39
Automation edge Version: 8.0.0