Cannot read property '__disableEmitter' of undefined

[shqyking]

First of all, I apologize that I cannot provide a reproduction link. I am not able to reproduce the issue without the complex setup of the project that I work on. I will try my best to describe the problem and hope someone can give me some hints or point some direction.

The issue happened when I use Ant Design Vue Table component with the "slot" functionality. Inside the slot I put a component(let's call it component A) to render the content I want. So far so good. Then I click some button to go to a new page. Components of old page start to unmount, and I see the error below

Uncaught (in promise) TypeError: Cannot read property '__disableEmitter' of undefined
    at Proxy.beforeUnmount (vue-i18n.esm-bundler.js?47e2:1672)
    at callWithErrorHandling (runtime-core.esm-bundler.js?5c40:154)
    at callWithAsyncErrorHandling (runtime-core.esm-bundler.js?5c40:163)
    at Array.hook.__weh.hook.__weh (runtime-core.esm-bundler.js?5c40:1934)
    at invokeArrayFns (shared.esm-bundler.js?6690:470)
    at unmountComponent (runtime-core.esm-bundler.js?5c40:4769)
    at unmount (runtime-core.esm-bundler.js?5c40:4679)
    at unmountChildren (runtime-core.esm-bundler.js?5c40:4809)
    at unmount (runtime-core.esm-bundler.js?5c40:4700)
    at unmountChildren (runtime-core.esm-bundler.js?5c40:4809)

The error stack trace shows it happens to beforeUnmount hook of the component A inside the slot. I tried to use different components to make sure it's not the problem of a specific component A. It turns out that no matter what component A is, the error always occurs. In addition, if I use native html element like <div> or <label>, no error occurs(this makes sense as those elements are not Vue components)

Looked at the complied vue-i18n file, "_vueI18n" is undefined, on line 1672 of screenshot attached. Maybe quick fix is to check "_vueI18n" before access its "__disableEmitter" property?

I suspect the root cause is something that I am even not aware of. At the moment, any help will be helpful.

Stack trace:

Error position in complied vue-i18n file:

[kazupon]

Thank you for your reporting!
This is vue-i18n v9 issue, and this is the same issue.
intlify/vue-i18n#412

Please, check it!
Thanks!

[gogoinga]

老哥，知道是什么原因引起了吗