I had Dolibarr 20.0.3 installed, and wanted to upgrade to 21.0.0. I used the Dolideb installation method.
However after downloading and running the 21.0.0 deb, it appears my database has been wiped clean. It also displayed some errors related to creation of database tables during the installation. I am not sure the steps to take in order to restore the database and fix the broken install. I cannot login as it displays the following