I'm not sure this is the correct fix. Can you check what "urlFormat" is in the constructor, when this happens? Maybe a callback is passed, and this callback has the bug?

I've already reviewed it @nicolas-grekas
The base path was previously created by "FileLinkFormatter::generateUrlFormat" method.

You can also see the "urlFormat" in the following path:
symfony/symfony/src/Symfony/Bundle/WebProfilerBundle/Resources/config/profiler.xml#63

    <service id="debug.file_link_formatter.url_format" class="string">
        <factory class="Symfony\Component\HttpKernel\Debug\FileLinkFormatter" method="generateUrlFormat" />
        <argument type="service" id="router" />
        <argument>_profiler_open_file</argument>
        <argument>?file=%%f&amp;line=%%l#line%%l</argument>
    </service>

OK, thanks for the reminder, works for me.
Could you add a test case please?

A test case with PHPUnit ?
@nicolas-grekas

Yes please

@Arman-Hosseini creating a test for this is not a trivial thing so, if you need help, you can copy+paste this test and make the needed changes to test your feature:

Hello @nicolas-grekas and @javiereguiluz .
I apologize. I am involved in a project and after that I only register a pull request in free time.
Do I have to create a separate class to do this, or is it enough to do a few tests within that class?

Yes, please do add a method on the class that'd be perfect.

Thank you @Arman-Hosseini.