Cannot read property 'action' of null

[subratamal]

In WP Backend there is a javascript error.

[subratamal]

Error details in chrome

[adamsilverstein]

Hello @subratamal and welcome to WordPress Trac. Thanks for the bug report. This does not look like a core bug (I don't see a similar error in my install) and may be caused by code in your theme or plugins. Can you try disabling all plugins and switching to a default theme (twentyseventeen for example) and see if the problem persists?

[subratamal]

Hi @adamsilverstein,

Thanks for your response, I have activated Twenty Seventeen theme and I am not using any plugin. I have just installed a new WordPress site. The issue is in Chromium browser, I have already debugged the issue it on wp-admin/js/updates.js line no 2440.

[adamsilverstein]

@subratamal Very odd! I am in chrome and don't see the error. What is your chrome version and operating system and version?

Can you try another browser and see if the error goes away? If it is a chrome only issue, try disabling any chrome extensions you have enabled.

[subratamal]

@adamsilverstein

Yes, you are right! that is because of a chrome extension(
Grammarly for Chrome). But I believe there should be a is NULL checking in update.js line no 2440.
Looking forward to your response.

Thank you.