class does not comply with psr-4 autoloading standard. Skipping

PSR-4 is a standard for autoloading classes in PHP. It requires that class files be organized in a specific directory structure and that the namespace of a class corresponds to the directory structure in which the class file is located. If a class does not comply with PSR-4, it may not be autoloaded correctly and may need to be manually included in the code. The message "class does not comply with psr-4 autoloading standard. Skipping" indicates that the class in question is not following the PSR-4 standard and will not be loaded automatically by the autoloader.