Symptoms

1. The CSS from pages such as Administration pages and Dashboards gets broken after an upgrade:
   

2. The following may appear in the atlassian-jira.log:

   2011-08-22 22:35:21,268 http-8080-3 ERROR      [500ErrorPage.jsp] Exception caught in 500 page ({name:"ParseError", message:"Syntax Error on line 9", filename:"dynamic:lookandfeel.less", line:9, column:0, extract:["@topTxtColour: #4C4C4C;", "@textHeadingColour: #black0;", "@faviconUrl: \"/images/icons/favicon.png\";"]})
   java.lang.RuntimeException: ({name:"ParseError", message:"Syntax Error on line 9", filename:"dynamic:lookandfeel.less", line:9, column:0, extract:["@topTxtColour: #4C4C4C;", "@textHeadingColour: #black0;", "@faviconUrl: \"/images/icons/favicon.png\";"]})
   	at com.atlassian.jira.web.less.LessTransformer$LessCompiler.compile(LessTransformer.java:298)
   	at com.atlassian.jira.web.less.LessTransformer$LessResource.transform(LessTransformer.java:170)
       ...
   Caused by: org.mozilla.javascript.JavaScriptException: [object Object] (setup-env.js#44)
   	at org.mozilla.javascript.gen.c1._c4(setup-env.js:44)
   	at org.mozilla.javascript.gen.c1.call(setup-env.js)
   	at org.mozilla.javascript.optimizer.OptRuntime.callName(OptRuntime.java:97)
   	at org.mozilla.javascript.gen.c2._c44(less-concat.js:644)
   	at org.mozilla.javascript.gen.c2.call(less-concat.js)
   	...
   

   2015-06-24 11:17:04,495 http-bio-8080-exec-22 WARN anonymous 677x290x6 3exfhk 10.163.8.71,127.0.0.1 /s/f902c82c4eb2d1bfd0c6d426707e7ac3-CDN/en_USxd8w3c/64020/11/7d3affa65a9e7addae635cd9ee21b03b/_/download/contextbatch/css/atl.dashboard,atl.general,jira.global/batch.css [cache.filecache.impl.CachedFile] Problem caching to disk, skipping cache for this entry
   com.atlassian.lesscss.LessSyntaxException: error evaluating function `hue`: Cannot find function toHSL in object [object Object].
       at com.atlassian.lesscss.RhinoLessCompiler.newLessException(RhinoLessCompiler.java:86)
       at com.atlassian.lesscss.RhinoLessCompiler.compile(RhinoLessCompiler.java:72)
       at com.atlassian.plugins.less.LessResource.transform(LessResource.java:37)
       at com.atlassian.plugin.webresource.transformer.CharSequenceDownloadableResource$1.apply(CharSequenceDownloadableResource.java:49)
       at com.atlassian.plugin.webresource.transformer.CharSequenceDownloadableResource$1.apply(CharSequenceDownloadableResource.java:46)
       (...)
       at java.lang.Thread.run(Unknown Source)
   Caused by: org.mozilla.javascript.JavaScriptException: [object Object] (/js/less/less-rhino.js#756)
       at org.mozilla.javascript.gen._js_less_less_rhino_js_1._c_anonymous_43(/js/less/less-rhino.js:756)
       at org.mozilla.javascript.gen._js_less_less_rhino_js_1.call(/js/less/less-rhino.js)
       (...)
       at org.mozilla.javascript.gen._js_less_less_patches_js_2.call(/js/less/less-patches.js)
       at com.atlassian.lesscss.RhinoLessCompiler.compile(RhinoLessCompiler.java:69)
       ... 181 more
   

Diagnosis

JIRA is upgraded using the steps in Upgrading JIRA Manually with an in-database upgrade, rather than the XML export/import.

Cause

1. By default, JIRA will scale favicon linked by URL after a logo URL has been referred via Administration > System > Look And Feel.
2. If using in-database upgrade method and have a logo that is a URL rather than a local resource, the referred URL will not be scaled and this causes the same problem.

Resolution

1. Navigate to Administration > Look And feel > Edit Configuration.
2. Save the current configuration (save it as a PDF).
3. Reset the default Logo and Favicon.
4. Reset all modified Colors and Gadget Colors by clicking on the Revert buttons for each modified color.
5. This will repair the CSS - to verify this test the page that previously caused problems to verify it renders correctly.
6. Add the logo's link again with Upload Logo and also add the Favicon if it was replaced.
7. Set any customized colors back to what they were.
8. Test to verify the instance is in the expected state and all is working.