Preview generator image size issue - previewgenerator - Nextcloud

Hello All. I have been trying to configure preview generator on my RPI 4. The first time i installed and ran preview generator app, it created fine previews. A bit too large in storage size however thumbnails were fitting well. After a few tweaks and changing the image sizes, the thumbnails are not fitting properly. Example is attached. I used these settings and I can not seem to revert these settings at all: occ config:app:set previewgenerator squareSizes --value="32 256" occ config:app:se

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