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Class "web_profiler.controller.profiler" does not exist after upgrading symfony 3.4 to 4.4 version

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After upgrading symfony from 3.4 to 4.4 version not able to access the debug toolbar as its erroring out with The controller for URI "/_wdt/9b3cc2" is not callable: Class "web_profiler.controller.profiler" does not exist."
Not sure what exactly causing this, could anyone please help me to resolve this.


Symfony version 4.4.42


routing_dev.yml

_wdt:
    resource: '@WebProfilerBundle/Resources/config/routing/wdt.xml'
    prefix: /_wdt

_profiler:
    resource: '@WebProfilerBundle/Resources/config/routing/profiler.xml'
    prefix: /_profiler

_errors:
    resource: '@TwigBundle/Resources/config/routing/errors.xml'
    prefix: /_error


config_dev.yml

web_profiler:
    toolbar: true
    intercept_redirects: false

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PHP

PHP (from the English Hypertext Preprocessor - hypertext preprocessor) is a scripting programming language for developing web applications. Supported by most hosting providers, it is one of the most popular tools for creating dynamic websites. The PHP scripting language has gained wide popularity due to its processing speed, simplicity, cross-platform, functionality and distribution of source codes under its own license.
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