Confluence may experience performance degradation and cannot read resource errors using MathJax plugin

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Platform notice: Server and Data Center only. This article only applies to Atlassian products on the Server and Data Center platforms.

Support for Server* products ended on February 15th 2024. If you are running a Server product, you can visit the Atlassian Server end of support announcement to review your migration options.

*Except Fisheye and Crucible

    

Summary

Confluence performance degrades and several Cannot read resource mathjax... messages appear in the log


Environment

  • Confluence 7.4.4
  • Mathjax 2.2.3


Diagnosis

We can spot the following messages inside the Atlassian-Confluence.log files:

ERROR [http-nio-8090-exec-17] [[Standalone].[localhost].[/].[file-server]] log Servlet.service() for servlet [file-server] threw exception
 -- referer: https://confluence_base_URL/display/...... | url: /s/d41d8cd98f00b204e9800998ecf8427e-CDN/-q4o2e2/8401/008d09724398b50e93468e30a239d4f6d750af9b/1.1/_/download/resources/com.cityinthesky.plugins.mathjax:resources/extensions/TeX/color.js | traceId: 375e6b5d09920f11 | userName: XXXXXXXXX
java.lang.RuntimeException: Cannot read resource mathjax/extensions/TeX/color.js
	at com.atlassian.plugin.webresource.impl.snapshot.Resource$1.writeTo(Resource.java:204)
	at com.atlassian.plugin.webresource.transformer.CompileTimeTransformer$1.writeTo(CompileTimeTransformer.java:59)
	at com.atlassian.plugin.webresource.impl.helpers.ResourceServingHelpers$8.writeTo(ResourceServingHelpers.java:465)


Cause

Mathjax plugin is enabled. The root cause analysis is performed by the plugin vendor.

Solution

  1. Disable the Mathjax plugin in Confluence administration → Manage apps
  2. Get in touch with the plugin vendor to analyze this behavior with the plugin


Last modified on Nov 5, 2020

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