What type of messages does the pm_error.log file specifically contain?

The pm_error.log file is specifically designed to capture warnings and error messages that occur within the application. This focus allows system administrators and security professionals to quickly identify issues that may affect the functionality or security of the system. By concentrating solely on these specific types of messages, the pm_error.log file helps streamline troubleshooting processes, making it easier to diagnose and resolve problems.

In contrast, the other options cover broader categories of log messages or data types that are not the primary focus of the pm_error.log file. For instance, the file does not record all log messages, as its purpose is to isolate warnings and errors for clarity and efficiency. Similarly, requests and responses or system configuration traces would be logged in different files, thereby ensuring that the error identification process remains precise and targeted.