How do I fix this custom javascript Error Notification pop-up on dashboard after upgrade to 8.2.7?

[AnilPujar]

<form script="search:tabs.js,custom_vizs:autodiscover.js, custom_vizs:dendrogram.js" stylesheet="search:da_service.css,search:tabs.css,custom_vizs:dendrogram.css" hideSplunkBar="true">

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common.js:1798 SyntaxError: Unexpected token , in JSON at position 49
at JSON.parse (<anonymous>)
at _decodeOptions (dashboard_1.1.js:277)
at dashboard_1.1.js:277
at Function._.each._.forEach (common.js:1798)
at Function.ready._enableComponentDivs (dashboard_1.1.js:277)
at dashboard_1.1.js:277
at Object.execCb (eval at module.exports (common.js:1117), <anonymous>:1658:33)
at Module.check (eval at module.exports (common.js:1117), <anonymous>:869:55)
at Module.eval (eval at module.exports (common.js:1117), <anonymous>:1121:34)
at eval (eval at module.exports (common.js:1117), <anonymous>:132:23)

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Failed to load resource: net::ERR_CONNECTION_TIMED_OUT  https://e1345286.api.splkmobile.com/1.0/e1345286//0/1

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Refused to apply style from 'https://*************:8000/en-US/static/@2e1fca123028.225/app/custom_vizs/dendrogram.css' because its MIME type ('text/html') is not a supported stylesheet MIME type, and strict MIME checking is enabled.

[templets]

In addition to adding the version="1.1" in your <form> or <dashboard> header, you'll want the updated version of tabs.js and tabs.css. You can find it at:

https://github.com/LukeMurphey/splunk-dashboard-tabs-example/commit/7baf110b74552f48ce410bb0181ba641...

That worked for me. 

The other thing you'll need to do is get Splunk to forget the old version. It seems to cache it so that even after replacing the .js file, it keeps using the old one.  I fixed this by "bumping" it.

https://<server_address>:8000/en-US/_bump

[richgalloway]

Try specifying version 1.1 in the dashboard.

<form script="search:tabs.js,custom_vizs:autodiscover.js, custom_vizs:dendrogram.js" stylesheet="search:da_service.css,search:tabs.css,custom_vizs:dendrogram.css" hideSplunkBar="true" version="1.1">

[templets]

Adding a version eliminates that part of the message, but not the "custom JavaScript" error part.

[thashmi]

Do we have a solution for the JavaScript errors??

[kamlesh_vaghela]

@thashmi 

Please check below link.

https://community.splunk.com/t5/Dashboards-Visualizations/Why-am-I-Receiving-quot-A-custom-JavaScrip...

KV