Command

update

Is this a regression?

• Yes, this behavior used to work in the previous version

The previous version in which this bug was not present was

No response

Description

Updating from Angular 20.1 to 20.2, the migration to Remove any karma configuration files that only contain the default content fails with this error:

✖ Migration failed: ENOENT: no such file or directory, open 'C:\DevForFun\workouttracker\config\files\karma.conf.js.template'

The message also references a log file, which contains the following:

[error] Error: ENOENT: no such file or directory, open 'C:\DevForFun\workouttracker\config\files\karma.conf.js.template'
at async open (node:internal/fs/promises:639:25)
at async readFile (node:internal/fs/promises:1243:14)
at async generateDefaultKarmaConfig (C:\DevForFun\workouttracker\workout-tracker\node_modules@schematics\angular\migrations\karma\karma-config-comparer.js:32:20)
at async compareKarmaConfigToDefault (C:\DevForFun\workouttracker\workout-tracker\node_modules@schematics\angular\migrations\karma\karma-config-comparer.js:87:28)
at async C:\DevForFun\workouttracker\workout-tracker\node_modules@schematics\angular\migrations\karma\migration.js:45:42
at async C:\DevForFun\workouttracker\workout-tracker\node_modules@schematics\angular\utility\workspace.js:64:24
at async callRuleAsync (C:\Users\AHummel\AppData\Local\Temp\angular-cli-packages-JTCUQN\node_modules@angular-devkit\schematics\src\rules\call.js:80:18)

The error is accurate, as the file it's looking for does not exist. The Angular application is actually in a sub-folder of a repo containing the API project and the Angular app (see folder structure of project mentioned in reproduction steps below).

Minimal Reproduction

• Clone the repo at https://github.com/mylifeandcode/workouttracker
• Navigate to the workout-tracker directory where the Angular app is located
• Run ng update @angular/core@20 @angular/cli@20 on the main branch.

Exception or Error

✖ Migration failed: ENOENT: no such file or directory, open 'C:\DevForFun\workouttracker\config\files\karma.conf.js.template'
 See "(your filename will vary)" for further details.

Your Environment

Angular CLI: 20.2.0
Node: 22.17.1
Package Manager: npm 10.9.2
OS: win32 x64
Angular: 20.2.1
... animations, common, compiler, compiler-cli, core, forms
... language-service, localize, platform-browser
... platform-browser-dynamic, router
Package Version
------------------------------------
@angular-devkit/architect 0.2002.0
@angular-devkit/core 18.2.2
@angular-devkit/schematics 18.2.2
@angular/build 20.2.0
@angular/cli 20.2.0
@schematics/angular 20.2.0
rxjs 7.8.1
typescript 5.8.3
zone.js 0.15.0

Anything else relevant?

Nothing else. Thanks for all you do to make this a great framework. :)