hey elk
Thanks for the prompt reply.
DISPLAY=:0 sudo ./Emteria.OS_Installer-x86_64.AppImage
worked for me
Now the launcher is displayed but something wrong with the login credentials
The following is displayed
QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-root'
file:///tmp/.mount_Emtericzqdor/usr/qml/QtQuick/Dialogs/DefaultFileDialog.qml:210:25: QML ListView: Binding loop detected for property "model"
qrc:/main.qml:221:17: QML Rectangle: Binding loop detected for property "height"
QIODevice::write (QFile, "/home/vijay/.local/share/Emteria/Installer/email"): device not open
QIODevice::write (QFile, "/home/vijay/.local/share/Emteria/Installer/email"): device not open
but, with the same credential, I am able to login to your website