Easy Installer installation issues Samsung Galaxy S9

Assuming Easy Installer would be trying to install e-1.9-q-20230310268292-stable-starlte.zip

… we see from https://gitlab.e.foundation/e/os/releases/-/releases that e-1.9-q-xxxx is expected to have an Android SPL of 5 Feb 2013

Is there any chance your current Samsung SPL is in advance of that ? That info should be in About phone > Android version … or perhaps Software version / revision.

… or you may find clues in the log … or paste it here.