Looks like you’re missing the namespace declaration. Something like xmlns:local="*"
which should go as an attribute at the top tag of your document. From: Serkan Taş<mailto:serkan....@likyateknoloji.com> Sent: Monday, January 27, 2020 10:15 PM To: users@royale.apache.org<mailto:users@royale.apache.org> Subject: local name space error Hi, How can I get rid of the error below ? should be very simple solution I guess... D:\dev\royale-emulation-works\github\royale-testing\src\main\mtest\FindBug.mxml(116): col: 3 Error: This tag could not be resolved to an ActionScript class. It will be ignored. <local:LineNumberTextDisplay id="mainTextField" height="100%" width="100%" /> ^