GitHub unit test failes on configuration using Karma

I am trying to run on github pipeline and I added test section. So all tests passes but it ends with this error

✔ Browser application bundle generation complete.
12 01 2024 08:38:12.950:INFO [karma-server]: Karma v6.4.2 server started at http://localhost:9876/
12 01 2024 08:38:12.952:INFO [launcher]: Launching browsers ChromeHeadless with concurrency unlimited
12 01 2024 08:38:12.959:INFO [launcher]: Starting browser ChromeHeadless
12 01 2024 08:38:16.312:INFO [Chrome Headless 120.0.6099.199 (Linux x86_64)]: Connected on socket DWOuKXQLVla7uEp-AAAB with id 43272771
Chrome Headless 120.0.6099.199 (Linux x86_64): Executed 0 of 2 SUCCESS (0 secs / 0 secs)
Chrome Headless 120.0.6099.199 (Linux x86_64): Executed 1 of 2 SUCCESS (0 secs / 0.076 secs)
Chrome Headless 120.0.6099.199 (Linux x86_64): Executed 2 of 2 SUCCESS (0 secs / 0.088 secs)
Chrome Headless 120.0.6099.199 (Linux x86_64): Executed 2 of 2 SUCCESS (0.147 secs / 0.088 secs)
TOTAL: 2 SUCCESS
✔ Browser application bundle generation complete.
✔ Browser application bundle generation complete.
- Generating browser application bundles (phase: setup)...
✔ Browser application bundle generation complete.
12 01 2024 08:38:30.019:INFO [karma-server]: Karma v6.4.2 server started at http://localhost:9876/
12 01 2024 08:38:30.020:INFO [launcher]: Launching browsers ChromeHeadless with concurrency unlimited
12 01 2024 08:38:30.023:INFO [launcher]: Starting browser ChromeHeadless
12 01 2024 08:38:30.260:INFO [Chrome Headless 120.0.6099.199 (Linux x86_64)]: Connected on socket ZG7l0ICZB34c5IMgAAAD with id 30559897
Chrome Headless 120.0.6099.199 (Linux x86_64): Executed 0 of 0 SUCCESS (0 secs / 0 secs)
Chrome Headless 120.0.6099.199 (Linux x86_64): Executed 0 of 0 SUCCESS (0.009 secs / 0 secs)
✔ Browser application bundle generation complete.
TOTAL: 0 SUCCESS
✔ Browser application bundle generation complete.
Error: Process completed with exit code 1.


I am not sure what does this mean and why this is happening cause locally all passes correctly

running command is here: "testrod": "ng test --browsers=ChromeHeadless --no-watch",

karma.conf.js file content is here

module.exports = function(config) {
config.set({
basePath: '',
frameworks: ['jasmine'],
files: [
'**/*.spec.ts',
'*.spec.ts',
],
exclude: [],
preprocessors: {
'**/*.spec.ts': ['webpack'],
'*.spec.ts': ['webpack'],
},
reporters: ['progress'],
port: 9876,
colors: true,
logLevel: config.LOG_INFO,
autoWatch: true,
browsers: ['ChromeHeadless'],
customLaunchers: {
ChromeHeadless: {
base: 'Chrome',
flags: ['--headless', '--disable-gpu', '--no-sandbox', '--remote-debugging-port=9222'],
},
},
singleRun: false,
concurrency: 2, // Adjust the concurrency level as needed
});
};


tsconfig.spec.json content is here

{
"extends": "./tsconfig.json",
"compilerOptions": {
"outDir": "./out-tsc/spec",
"types": ["jasmine", "@angular/localize"]
},
"include": ["src/**/*.spec.ts", "src/**/*.d.ts"]
}

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