JP Logs reads the Joomla! logs and also the other 3rd. party extensions if are using the logs folder.
You can read in a lined numbered are your log files looking for errors or you can delete or download in zip format.
I installed this and the log was available, even better it had been cleaned up, I have just blocked the IPs of a number of sites trying to access the admin part of my site. many thanks to the developer, simple and easy to use.