Magnolia 6.2.63 known issues
Commons IO Library Compatibility Issue
An issue with the commons-io library was introduced in this release that may affect system functionality.
This issue was introduced with BUILD-1431  and is resolved in the 6.2.64 release with BUILD-1464.
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Affected Component: commons-iolibrary (upgraded version causing compatibility issues)
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Issue Reference: BUILD-1464 
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Resolution Timeline: Is fixed in Magnolia CMS 6.2.64. 
Workaround
Upgrade to 6.2.64 where this issue is fixed.
Alternatively, you can downgrade the commons-io library to version 2.16.1:
In your project’s pom.xml
<dependency>
    <groupId>commons-io</groupId>
    <artifactId>commons-io</artifactId>
    <version>2.16.1</version> (1)
</dependency>| 1 | This workaround ensures compatibility while maintaining system stability; however, we recommend upgrading to 6.2.64, where this issue is fixed. |