# \[solved\] I'm having some trouble uploading plugins

**URL:** <https://forum.kintone.dev/t/solved-im-having-some-trouble-uploading-plugins/1694>\
**Category:** General\
**Created:** [May 18, 2026, 4:28am UTC](https://forum.kintone.dev/t/solved-im-having-some-trouble-uploading-plugins/1694 "2026-05-18T04:28:16Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![Doanh\_Su\_dai](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.kintone.dev/doanh_su_dai/32/987_2.png) [@Doanh\_Su\_dai](https://forum.kintone.dev/u/Doanh_Su_dai)\
**Post date:** [May 18, 2026, 4:28am UTC](https://forum.kintone.dev/t/solved-im-having-some-trouble-uploading-plugins/1694/1 "2026-05-18T04:28:17Z")

</div>

## Question / Problem

I'm building a JavaScript client with the Kintone plugin.  
When I uploaded the plugin.zip file, I received an error message: "Error occurred."

- **Invalid request.**

- **(CB\_IL02 RzUEWHgWXNCp4pAsmQ89)**

## Current Situation

I tried with a different app or account or a different plugin.zip but the same result

When uploading from _ **{domain}/k/admin/system/plugin/** ,_ the system calls two APIs: `/k/api/blob/upload.json` and it succeeds. The other API is `k/api/dev/plugin/import.json` with the response {  
"code": "CB\_IL02",  
"messageType": "text",  
"success": false,  
"id": "RzUEWHgWXNCp4pAsmQ89",  
"message": "Invalid request."  
}

### Code / Attempts

_Just a file empty main.js or an my old plugin.zip that uploaded successfull_

### Error Message

**Error occurred.**

- **Invalid request.**

- **(CB\_IL02 RzUEWHgWXNCp4pAsmQ89)**

## Desired Outcome / Expected Behavior

I want to experiment with custom Kintone as soon as possible due to deadlines.

---

<div class="post-metadata">

**Author:** ![Jay\_Lonnquist](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.kintone.dev/jay_lonnquist/32/976_2.png) [@Jay\_Lonnquist](https://forum.kintone.dev/u/Jay_Lonnquist)\
**Post date:** [May 18, 2026, 9:56am UTC](https://forum.kintone.dev/t/solved-im-having-some-trouble-uploading-plugins/1694/2 "2026-05-18T09:56:18Z")

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Would appear to be working properly again.

Successfully installed a plugin through the CLI.

👍

---

<div class="post-metadata">

**Author:** ![Chris](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.kintone.dev/chris/32/44_2.png) [@Chris](https://forum.kintone.dev/u/Chris)\
**Post date:** [May 18, 2026, 3:07pm UTC](https://forum.kintone.dev/t/solved-im-having-some-trouble-uploading-plugins/1694/3 "2026-05-18T15:07:34Z")

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Hello @Doanh_Su_dai and @Jay_Lonnquist  
It appears there was a system-wide issue, which was noted on [the official notification page](https://cs.cybozu.co.jp/2026/013737.html).

As there does not seem to be an English version available at this time, please allow me to summarize the issue:

**When attempting to import a new plugin from the Kintone Administration page, an “Invalid Request” error would appear, preventing the plugin from being read/imported.**

According to the notification, the issue occurred on **Monday, May 18, 2026, approximately between 10:00 AM and 4:13 PM (JST)**. Based on this, I assume this is why the issue is no longer occurring and is now working as expected.

I hope this helps.