gvfs metadata is not supported. fallback to teplmetadatamanager. either gvfs is not correctly installed or gvfs metadata are not supported on this platform. in the latter case, you should configure tepl with disable gvfs metadata code example

Example: GVfs metadata is not supported. Fallback to Tell Metadata Manager. Either GVfs is not correctly installed or GVfs metadata are not supported on this platform. In the latter case, you should configure Tepl with --disable-gvfs-metadata.

sudo -H gedit /etc/default/grub