title: How to handle errors and exceptions in Talend
body: <p>I am new in talend. I am trying to catch run time errors and exceptions and display meaningful message to the end user, but i am failed to do this. I saw many tutorials they use different pallets. If in one tutorial tLogCatcher is used whereas in other file it is using tAssertCatcher. I tried with both but could not do. With that i am confuse that where i have to write xpath to replace the error or exception with my own message.Can anybody help me that how to catch errors and exceptions and show meaningful messages.Thanks</p>