Primefaces 迁移：org.primefaces.util.FileUploadUtils.isValidType 无法验证上传文件的类型

问：

我正在将Primefaces 6.2迁移到7.0，但遇到了以下问题： 这是我用于文件上传的组件

                    <p:fileUpload id="fileupload"
                                  label="#{msg['page.application-decisions.selectFile']}"
                                  value="#{decisionBean.uploadedFile}"
                                  style="display: flex; "
                                  styleClass="button like-link font-14 -margin-bottom-20"
                                  mode="advanced"
                                  multiple="false"
                                  auto="true"
                                  dragDropSupport="false"
                                  allowTypes="/(\.|\/)(pdf)$/"
                                  sizeLimit="10000000"
                                  invalidSizeMessage="#{msg['page.application-decisions.invalidSizeMessage']}"
                                  invalidFileMessage="#{msg['page.application-decisions.invalidFileMessage']}"
                                  fileLimitMessage="#{msg['page.application-decisions.fileLimitMessage']}"
                                  fileUploadListener="#{decisionBean.handleFileUpload}"
                                  disabled="#{decisionBean.application.anyDecisionNotNotified==true}"
                                  update="filemsg fileupload uploadedFileName @this">
                    </p:fileUpload>

在 Pf 6.2 组件上正确上传文件，但在 PF 7.0 中，我遇到堆栈跟踪错误：

07-Nov-2023 10:28:39.858 WARNING [http-nio-8080-exec-3] org.primefaces.util.FileUploadUtils.isValidType The type of the uploaded file attachmentExample.pdf could not be validated
    javax.script.ScriptException: java.lang.NullPointerException: JavaScript ScriptEngine not available via the context ClassLoader or the extension ClassLoader.
        at org.primefaces.util.FileUploadUtils.isValidFileName(FileUploadUtils.java:177)
        at org.primefaces.util.FileUploadUtils.isValidType(FileUploadUtils.java:145)
        at org.primefaces.component.fileupload.NativeFileUploadDecoder.isValidFile(NativeFileUploadDecoder.java:118)
        at org.primefaces.component.fileupload.NativeFileUploadDecoder.decodeAdvanced(NativeFileUploadDecoder.java:111)
        at org.primefaces.component.fileupload.NativeFileUploadDecoder.decode(NativeFileUploadDecoder.java:56)
        at org.primefaces.component.fileupload.FileUploadRenderer.decode(FileUploadRenderer.java:60)
        at javax.faces.component.UIComponentBase.decode(UIComponentBase.java:832)
        at javax.faces.component.UIInput.decode(UIInput.java:773)

如果我删除allowTypes参数，则没有错误，但我需要验证.pdf扩展名