Lately, some of you might be experiencing a DUMP while navigating through the NF-e and Event Monitors. If you are having this kind of issue, please review if you are using the old application NFE_MAIN_MONITOR. This is not supposed to be used anymore. The application that should be used is called NFE_MONITOR_NEW.
Just to clarify, NFE_MAIN_MONITOR has different tabs as you can see below
NFE_MONITOR_NEW doesn’t have any
You can check KBA 2009334 that has all the directions in order to solve this.