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Failed to initialize plugin: Smart solution for st_plugin

2019, 12, 2,

WordPress version was updated to WordPress 5.3 on November 12, 2019. Due to this effect,the Failed to initialize plugin: st_plugin is now displayed on the Affinger5 post screen, and menus such as tags can no longer be displayed on the post screen. Now that we've found a smart solution to this problem, we'll share it.

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  • Users of Affinger5
  • Want to avoid theme updates?

Failed to initialize plugin: Smart solution for st_plugin

The solution is as follows: Get ver20191114 from


From the official page of Affinger5, a modified version of version has been uploaded, so please download here.

upload only js to be modified (tinymce-st-plugin.js)

This improvement is "... public_html/wp-content/themes/affinger5/js" was the only file called"tinymce-st-plugin.js",so I'll upload it with FTP only here. ※ To be precise, the style .css also changed, but it seems to be a correction only for headers.

Clear Chrome cache (tinymce-st-plugin.js)

Finally, clear chrome's cache to reflect the fix.

Official way

The official way is to just update the ver20191114 file as is and erase Chrome's cache as above. However, if you update the theme as it is, I think that depending on the person, the contents set so far will be initialized in various ways. When I learned of the verUp of Affinger5 about two months ago, various settings were initialized, and I was at a loss.

I wanted to avoid that experience, so I looked at what was updated with the Affinger5 theme. Somehow, if it is a change of this level, I want you to make a specification that will partially update. That's where I am today. Thank you for browsing. So, then(^^)/

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