Error after upgrading to Ember CLI 5.12: Cannot find module @ember-data/request-utils/deprecation-support

Ember CLI
1

Hi everyone! :waving_hand:

I’m currently in the process of upgrading my Ember app, and I’m running into an issue I can’t resolve. I’m hoping someone might have encountered this before or might help me with advice.

Upgrade context: Ember CLI: upgraded from 5.4.2 → 5.12.0 Ember Data: upgraded from 5.3.0 → 5.3.8

After the upgrade, the app builds successfully, but when I try to run it, I get this error in the browser console (Could not find module @ember-data/request-utils/deprecation-support imported from main-app/initializers/ember-data):

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My package.json:

"devDependencies": {
    "gulp": "^4.0.2",
    "gulp-concat": "2.6.1",
    "gulp-cssmin": "0.2.0",
    "gulp-uglify": "3.0.2",
    "gulp-clean-css": "4.3.0",
    "gulp-less": "5.0.0",
    "gulp-sass": "5.1.0",
    "del": "3.0.0",
    "rimraf": "5.0.5",
    "sass": "~1.70.0",
    "@progress/kendo-theme-default": "8.2.1",
    "@babel/core": "^7.25.2",
    "@babel/plugin-proposal-decorators": "^7.24.7",
    "@ember/optional-features": "^2.1.0",
    "@ember/string": "^4.0.0",
    "@glimmer/component": "^1.1.2",
    "@glimmer/tracking": "^1.1.2",
    "broccoli-asset-rev": "^3.0.0",
    "ember-auto-import": "^2.8.1",
    "ember-cli": "5.12.0",
    "ember-cli-app-version": "^7.0.0",
    "ember-cli-babel": "^8.2.0",
    "ember-cli-dependency-checker": "^3.3.2",
    "ember-cli-htmlbars": "^6.3.0",
    "ember-cli-sri": "^2.1.1",
    "ember-cli-terser": "^4.0.2",
    "ember-fetch": "^8.1.2",
    "ember-load-initializers": "^2.1.2",
    "ember-modifier": "^4.2.0",
    "ember-page-title": "^8.2.3",
    "ember-resolver": "^12.0.1",
    "ember-data": "5.3.8",
    "ember-source": "5.12.0",
    "loader.js": "^4.7.0",
    "tracked-built-ins": "^3.3.0",
    "webpack": "^5.95.0",

    "ember-cp-validations": "7.0.0",
    "@ember/render-modifiers": "^3.0.0"
},

Has anyone run into this issue after upgrading to Ember CLI 5.12? Is there a recommended way to resolve or avoid this module import error? Any insights or tips would be greatly appreciated! :folded_hands: