Deprecated psr-4 autoloading standard

[envatic]

Composer Deprecation notice
This is an issue that requires namespace to be same as Folder structure,

Deprecation Notice: Class Techworker\Ssml\Specification\InvalidAttributeValueException located in ./vendor/techworker/ssml/src/Specification/Exception/InvalidAttributeValueException.php does not comply with psr-4 autoloading standard. It will not autoload anymore in Composer v2.0. in phar:///usr/local/bin/composer/src/Composer/Autoload/ClassMapGenerator.php:201

Deprecation Notice: Class Techworker\Ssml\Specification\InvalidElementException located in ./vendor/techworker/ssml/src/Specification/Exception/InvalidElementException.php does not comply with psr-4 autoloading standard. It will not autoload anymore in Composer v2.0. in phar:///usr/local/bin/composer/src/Composer/Autoload/ClassMapGenerator.php:201
Deprecation Notice: Class Techworker\Ssml\Element\Amazon\Emphasis located in ./vendor/techworker/ssml/src/Element/Emphasis.php does not comply with psr-4 autoloading standard. It will not autoload anymore in Composer v2.0. in phar:///usr/local/bin/composer/src/Composer/Autoload/ClassMapGenerator.php:201