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https://issues.apache.org/jira/browse/TAP5-541?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12677407#action_12677407
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Andy Pahne commented on TAP5-541:
---------------------------------
I can verify this behaviour. In fact I posted to the mailing list about it a
while ago.
see http://markmail.org/message/sqlqx3ljnd4ooy7r
Anyway, I am not sure that the reason is the missing declaration on the title
tag, because I got it working again (don't know how), but did not change
anything about the declarations.
Abdy
> Regression: Parameter namespacePrefix was null
> ----------------------------------------------
>
> Key: TAP5-541
> URL: https://issues.apache.org/jira/browse/TAP5-541
> Project: Tapestry 5
> Issue Type: Bug
> Components: tapestry-core
> Affects Versions: 5.1
> Reporter: Andrej Aschenbrenner
>
> I get an exception after switching to the new Tapestry 5.1.0.0 Version.
> Relevant Template snippet:
> <html xmlns="http://www.w3.org/1999/xhtml";
> xmlns:t="http://tapestry.apache.org/schema/tapestry_5_0_0.xsd";>
> <head>
> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
> <title>${title}</title>
> <meta name="version" content="${version}" />
> <link rel="stylesheet" type="text/css"
> href="${asset:context:css/global.css}"/>
> <link rel="stylesheet" type="text/css" title="Standard"
> href="${asset:context:css/standard/style.css}"/>
> </head>
> ...
> Exception StackTrace snippet:
> 16:18:38,581 ERROR [Login] Render queue error in
> CompositeRenderCommand[Start[http://www.w3.org/1999/xhtml html],
> DefineNamespace[null http://www.w3.org/1999/xhtml], Text[
> ], Start[http://www.w3.org/1999/xhtml head], Text[
> ], Start[http://www.w3.org/1999/xhtml meta], AttributeNS[ http-equiv
> "Content-Type"], AttributeNS[ content "text/html; charset=UTF-8"], End, Text[
> ], Start[http://www.w3.org/1999/xhtml title]]: Parameter namespacePrefix
> was null.
> java.lang.IllegalArgumentException: Parameter namespacePrefix was null.
> at
> org.apache.tapestry5.ioc.internal.util.Defense.notNull(Defense.java:37)
> at org.apache.tapestry5.dom.Element.defineNamespace(Element.java:519)
> at
> org.apache.tapestry5.internal.services.MarkupWriterImpl.defineNamespace(MarkupWriterImpl.java:221)
> at
> org.apache.tapestry5.internal.pageload.PageLoaderImpl$4.render(PageLoaderImpl.java:341)
> at
> org.apache.tapestry5.internal.pageload.CompositeRenderCommand.render(CompositeRenderCommand.java:68)
> at
> org.apache.tapestry5.internal.services.RenderQueueImpl.run(RenderQueueImpl.java:74)
> at
> org.apache.tapestry5.internal.services.PageRenderQueueImpl.render(PageRenderQueueImpl.java:121)
> at
> $PageRenderQueue_11fb85075e4.render($PageRenderQueue_11fb85075e4.java)
> at
> $PageRenderQueue_11fb85075db.render($PageRenderQueue_11fb85075db.java)
> at
> org.apache.tapestry5.internal.services.MarkupRendererTerminator.renderMarkup(MarkupRendererTerminator.java:37)
> ...
> For me it seems that Tapestry requires a namespace declaration on the <title>
> tag. But I have already the default namespace declaration on
> the <html xmlns="http://www.w3.org/1999/xhtml";> tag.
> P.S. with only <html
> xmlns:t="http://tapestry.apache.org/schema/tapestry_5_0_0.xsd";> it fails
> also. But it did work on Tapestry 5.0.18
> Thanks,
> Andrej Aschenbrenner
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