We have upgraded our instance to AEM 6.4.3, After the upgrade, any component which has more than 1 xtype:tags throws the below exception in the console.
Anyone encountered it? Attached the screenshot of the error
This is a known issue, with an internal id-> CQ-4262680. The fix for this issue will be part of the upcoming release AEM 6.4.4 which is going to be released tomorrow.
Vish.dhaliwal's answer is correct.
This is a bug specific to 6.4.3 that is fixed in 6.4.4
NOTE : post install of 6.4.4 you may want to purge the clientlib and sightly cache's from the filesystem.
Under \crx-quickstart\launchpad\felix grep for "Outputcache" -- delete the contents of this folder. -- this is the client library cache
Under \crx-quickstart\launchpad\felix grep for "Classes" -- delete the contents of this folder. -- this is the sightly cache
Do you see any functional impact by this exception?
Also, xtype was used classic UI which has been deprecated since AEM 6.3. Going forward, you should be looking at upgrading the components to use coralUI