Unmarshaller throws IllegalAccessError on simple XML String parsing

Question

I would like to deserialize a simple xml string to an object using the javax.xml.bind.Unmarshaller in an java EE application running in open-liberty. I have following method to deserialize:

Deserialize

package com.my.deserializer;

public class XmlDeserializer {
    private static Name deserialize() {
        try {
            JAXBContext jaxbContext = JAXBContext.newInstance(Name.class);
            Unmarshaller unmarshaller = jaxbContext.createUnmarshaller();           

            StringReader reader = new StringReader("<Name xml:lang=\"en\">Acme, Inc.</Name>");
            Name cXml = (Name) unmarshaller.unmarshal(reader);
            return cXml;
        } catch (JAXBException e) {
            e1.printStackTrace();
        }
        return null;
    }
}

Class

package com.my.model;

@XmlRootElement(name = "Name")
public class Name implements Serializable {
    private static final long serialVersionUID = -4018453444627994825L;

    @XmlAttribute(name = "lang", namespace = "xml")
    public String lang;
    
    @XmlValue
    public String text;
}

When I call XmlDeserializer.deserialize(), I get following exception:

java.lang.IllegalAccessError: tried to access class com.my.model.Name from class com.my.deserializer.XmlDeserializer

I only can get this code working if I change class name from Name to any other name e.x. Name_Entity. Is there anything wrong with my code?

System specs

• Windows 10 x64
• Eclipse 2020-06
• Java SE-1.8
• Maven Dependency:

<dependency>
    <groupId>javax.xml.bind</groupId>
    <artifactId>jaxb-api</artifactId>
    <version>2.3.1</version>
</dependency>

OpenLiberty (v. 20.0.0.9)

Feautures:

<feature>webProfile-8.0</feature>
<feature>mpJwt-1.1</feature>
<feature>localConnector-1.0</feature>
<feature>mpHealth-2.2</feature>
<feature>jaxws-2.2</feature>