How i can clean all the error message of the extension that are no more available?
Reupload the extension files from the backup you made before the upgrade to the ext folder and then disable and delete data for those extensions and then delete the files from the ext folder - or in other words follow the instructions on that page.
David Remember: You only know what you know and - you don't know what you don't know! My CDB Contributions | How to install an extension I will not be accepting translations for any of my extensions in Github - please post any translations in the appropriate topic. No support requests via PM or email as they will be ignored