This message can be ignored, it is not an error. This message simply means the agent has attempted to access a log file that is not available on that specific system, the agent has a standard list of logs to look for to ensure that all possible standard log files are monitored by the agent on all possible platforms. It contains a list of log files that may not exist on all systems and these messages are normal to see.
If this log file does exist on your system then check to ensure you do not have a third party product preventing the agent from accessing the file, and contact the vendor for that product for assistance re-configuring it to work correctly.