UI crash on RECORD_NOT_UNIQUE error (no error message shown, just blank screen)

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1

When trying to create an item in a collection with a unique field, if the value is not unique, the backend correctly returns an error:

{
  "errors": [
    {
      "message": "Value in collection \"Topics\" has to be unique.",
      "extensions": {
        "collection": "Topics",
        "field": null,
        "value": null,
        "primaryKey": false,
        "code": "RECORD_NOT_UNIQUE"
      }
    }
  ]
}

However, in the Admin App (tested with both English and Russian UI), no error message is displayed. Instead, the screen turns dark/blank, and the user is unable to proceed.

Expected behavior:
The UI should show a clear validation error (e.g. “This field must be unique”) instead of crashing.

Steps to reproduce:

  1. Create a collection with a field marked as unique.

  2. Add a new item with a value that already exists in that field.

  3. Observe that the Admin App crashes with a dark overlay instead of showing the error.

Environment:

  • Directus version: (11.11.0)

  • Browser: Chrome (version 139.0.7258.128)

  • OS: (Windows 10)

Topics:1  Failed to load resource: the server responded with a status of 400 ()
index.Cn8BKsAz.entry.js:4383 [app-v-form-error] https://vuejs.org/error-reference/#runtime-1
Cqt.n.config.errorHandler @ index.Cn8BKsAz.entry.js:4383
index.Cn8BKsAz.entry.js:4383 TypeError: Cannot read properties of null (reading 'endsWith')
    at index.Cn8BKsAz.entry.js:3409:59586
    at p (runtime-core.esm-bundler-CMw1Vw1m.js:10:7981)
    at Array.find (<anonymous>)
    at je (runtime-core.esm-bundler-CMw1Vw1m.js:10:8071)
    at Proxy.find (runtime-core.esm-bundler-CMw1Vw1m.js:10:6619)
    at index.Cn8BKsAz.entry.js:3409:59515
    at da (runtime-core.esm-bundler-CMw1Vw1m.js:15:8284)
    at Proxy.<anonymous> (index.Cn8BKsAz.entry.js:3409:58162)
    at _n (runtime-core.esm-bundler-CMw1Vw1m.js:15:33680)
    at En.k [as fn] (runtime-core.esm-bundler-CMw1Vw1m.js:15:24724)
Cqt.n.config.errorHandler @ index.Cn8BKsAz.entry.js:4383
index.Cn8BKsAz.entry.js:4383 [app-v-form-error] https://vuejs.org/error-reference/#runtime-1
Cqt.n.config.errorHandler @ index.Cn8BKsAz.entry.js:4383
index.Cn8BKsAz.entry.js:4383 TypeError: Cannot read properties of null (reading 'endsWith')
    at index.Cn8BKsAz.entry.js:3409:59586
    at p (runtime-core.esm-bundler-CMw1Vw1m.js:10:7981)
    at Array.find (<anonymous>)
    at je (runtime-core.esm-bundler-CMw1Vw1m.js:10:8071)
    at Proxy.find (runtime-core.esm-bundler-CMw1Vw1m.js:10:6619)
    at index.Cn8BKsAz.entry.js:3409:59515
    at da (runtime-core.esm-bundler-CMw1Vw1m.js:15:8284)
    at Proxy.<anonymous> (index.Cn8BKsAz.entry.js:3409:58162)
    at _n (runtime-core.esm-bundler-CMw1Vw1m.js:15:33680)
    at En.k [as fn] (runtime-core.esm-bundler-CMw1Vw1m.js:15:24724)
Cqt.n.config.errorHandler @ index.Cn8BKsAz.entry.js:4383
Topics:1  Failed to load resource: the server responded with a status of 400 ()
index.Cn8BKsAz.entry.js:4383 [app-v-form-error] https://vuejs.org/error-reference/#runtime-1
Cqt.n.config.errorHandler @ index.Cn8BKsAz.entry.js:4383
index.Cn8BKsAz.entry.js:4383 TypeError: Cannot read properties of null (reading 'endsWith')
    at index.Cn8BKsAz.entry.js:3409:59586
    at p (runtime-core.esm-bundler-CMw1Vw1m.js:10:7981)
    at Array.find (<anonymous>)
    at je (runtime-core.esm-bundler-CMw1Vw1m.js:10:8071)
    at Proxy.find (runtime-core.esm-bundler-CMw1Vw1m.js:10:6619)
    at index.Cn8BKsAz.entry.js:3409:59515
    at da (runtime-core.esm-bundler-CMw1Vw1m.js:15:8284)
    at Proxy.<anonymous> (index.Cn8BKsAz.entry.js:3409:58162)
    at _n (runtime-core.esm-bundler-CMw1Vw1m.js:15:33680)
    at En.k [as fn] (runtime-core.esm-bundler-CMw1Vw1m.js:15:24724)
Cqt.n.config.errorHandler @ index.Cn8BKsAz.entry.js:4383
index.Cn8BKsAz.entry.js:4383 [app-v-form-error] https://vuejs.org/error-reference/#runtime-1
Cqt.n.config.errorHandler @ index.Cn8BKsAz.entry.js:4383
index.Cn8BKsAz.entry.js:4383 TypeError: Cannot read properties of null (reading 'endsWith')
    at index.Cn8BKsAz.entry.js:3409:59586
    at p (runtime-core.esm-bundler-CMw1Vw1m.js:10:7981)
    at Array.find (<anonymous>)
    at je (runtime-core.esm-bundler-CMw1Vw1m.js:10:8071)
    at Proxy.find (runtime-core.esm-bundler-CMw1Vw1m.js:10:6619)
    at index.Cn8BKsAz.entry.js:3409:59515
    at da (runtime-core.esm-bundler-CMw1Vw1m.js:15:8284)
    at Proxy.<anonymous> (index.Cn8BKsAz.entry.js:3409:58162)
    at _n (runtime-core.esm-bundler-CMw1Vw1m.js:15:33680)
    at En.k [as fn] (runtime-core.esm-bundler-CMw1Vw1m.js:15:24724)
Cqt.n.config.errorHandler @ index.Cn8BKsAz.entry.js:4383