Facing the following error in the log file during loading of Keycloak UI console.
2024-03-20 15:45:02,737 ERROR [org.keycloak.theme.DefaultThemeManager] (executor-thread-0) Failed to find WELCOME theme ard, using built-in themes
ARD HUB 3.4
This caused due to the presence of X-Frame option in the header.
If you are not able to see the enabled headers in developer tools then it seems that the headers are being controlled by GASP proxy layer.
Hence, if you would like to see the headers, then add the X-Frame-Options header at GASP proxy side with below value and check if you see it in the browser and if it still works.
<header>
<name>X-Frame-Options</name>
<value>SAMEORIGIN</value>
</header>