如何解决Magnolia CMS 中的比较页面给出：对实体“l”的引用必须以“;”结尾分隔符
当我尝试在我的 magnolia CMS 5.7 中使用功能比较页面时，我收到一条错误消息：
HTTP Status 500 - javax.servlet.servletexception: org.xml.sax.SAXParseException; lineNumber: 7; columnNumber: 51; The reference to entity "l" must end with the ';' delimiter.
type Exception report
message javax.servlet.servletexception: org.xml.sax.SAXParseException; lineNumber: 7; columnNumber: 51; The reference to entity "l" must end with the ';' delimiter.
description The server encountered an internal error that prevented it from fulfilling this request.
exception
java.lang.RuntimeException: javax.servlet.servletexception: org.xml.sax.SAXParseException; lineNumber: 7; columnNumber: 51; The reference to entity "l" must end with the ';' delimiter.
info.magnolia.module.cache.filter.CacheFilter.doFilter(CacheFilter.java:234)
info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85)
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79)
info.magnolia.cms.i18n.I18nContentSupportFilter.doFilter(I18nContentSupportFilter.java:89)
info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85)
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79)
info.magnolia.cms.filters.RangeSupportFilter.doFilter(RangeSupportFilter.java:77)
info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85)
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79)
info.magnolia.cms.security.BaseSecurityFilter.doFilter(BaseSecurityFilter.java:57)
info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85)
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79)
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81)
info.magnolia.cms.security.CsrfSecurityFilter.doFilter(CsrfSecurityFilter.java:106)
info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85)
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79)
info.magnolia.cms.security.SecurityCallbackFilter.doFilter(SecurityCallbackFilter.java:84)
info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:59)
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79)
info.magnolia.cms.security.logoutFilter.doFilter(logoutFilter.java:94)
info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:59)
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79)
info.magnolia.module.site.filters.SiteMergeFilter.doFilter(SiteMergeFilter.java:119)
info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85)
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79)
info.magnolia.multisite.filters.MultiSiteFilter.doFilter(MultiSiteFilter.java:120)
info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85)
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79)
info.magnolia.cms.filters.MultiChannelFilter.doFilter(MultiChannelFilter.java:83)
info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85)
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79)
info.magnolia.module.cache.filter.GZipFilter.doFilter(GZipFilter.java:73)
info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:59)
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79)
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81)
info.magnolia.cms.security.auth.login.LoginFilter.doFilter(LoginFilter.java:127)
info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85)
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79)
info.magnolia.enterprise.registration.RegistrationFilter.doFilter(RegistrationFilter.java:64)
info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85)
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79)
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81)
info.magnolia.cms.filters.CosMultipartRequestFilter.doFilter(CosMultipartRequestFilter.java:111)
info.magnolia.cms.filters.OncePerRequestAbstractMgnlFilter.doFilter(OncePerRequestAbstractMgnlFilter.java:59)
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79)
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81)
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81)
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81)
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:81)
info.magnolia.cms.filters.ContentTypeFilter.doFilter(ContentTypeFilter.java:155)
info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85)
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79)
info.magnolia.cms.filters.ContextFilter.doFilter(ContextFilter.java:128)
info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85)
info.magnolia.cms.filters.MgnlFilterChain.doFilter(MgnlFilterChain.java:79)
info.magnolia.cms.filters.CompositeFilter.doFilter(CompositeFilter.java:65)
info.magnolia.cms.filters.AbstractMgnlFilter.doFilter(AbstractMgnlFilter.java:85)
info.magnolia.cms.filters.SafeDestroyMgnlFilterWrapper.doFilter(SafeDestroyMgnlFilterWrapper.java:107)
info.magnolia.cms.filters.MgnlFilterdispatcher.dodispatch(MgnlFilterdispatcher.java:67)
info.magnolia.cms.filters.MgnlMainFilter.doFilter(MgnlMainFilter.java:110)
info.magnolia.cms.filters.MgnlMainFilter.doFilter(MgnlMainFilter.java:96)
对于仅包含单个文本“test”并更改为“test123”的页面也会发生这种情况。
我知道它无法解析我想与有效 xml 进行比较的页面，因此它可以比较它们，但我不知道要注意什么，因此欢迎提供任何帮助/建议。
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