About the error log
The error log, error_log.csv, is a comma-separated values (CSV) file. If you use the default error logging extension, ErrorLoggingExt, you can set the logging level to:
Information
The error log records messages that trace BIRT iHub behavior.
Warning
The error log records warnings. The errors do not necessarily affect the operation of BIRT iHub.
Severe
The error log records errors that can result in BIRT iHub failure if you do not correct them.
Fatal
The error log records critical errors from which BIRT iHub cannot recover and that can result in failure.