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Good day everyone,

I have a manage package in my org. It is working well. But just this morning, when I try to install the package I've seen this error for the first time. 

"Something has gone wrong. afterRender threw an error in 'markup://aura:html' [afterRender threw an error in 'markup://aura:html' [afterRender threw an error in 'markup://aura:if' [afterRender threw an error in 'markup://ui:label' [afterRender threw an error in 'markup://aura:html' [afterRender threw an error in 'markup://aura:expression' [afterRender threw an error in 'markup://aura:html' [afterRender threw an error in 'markup://ui:inputRadio' [TypeError: a is null]]]]]]]] Failing descriptor: {markup://aura:html}. Please try again."

What is the possible reason of this ? I've already install this package many times before but now I can't. Please help.

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    Once you acknowledge the erroneous error the really error should be displayed afterwards. Usually due to a dependency – Eric Jun 22 '16 at 4:35
  • @Eric you are right. I didn't seen it until I close the first error. Thank you... – Hope Jun 22 '16 at 4:41
  • Added it as the answer – Eric Jun 22 '16 at 4:43
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Once you acknowledge the erroneous error the really error should be displayed afterwards. Usually due to a dependency

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For newly created org, the locker service feature will be active by default.If you are trying to install your lightning package into a newly created org, this can be the reason. Deactivating the locker service might be a temporary fix for this.

You can deactivate it by going to Build > Critical Updates

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