Failure while uninstalling an older version prevents from installing a new version
Is this a question about a database (because of tag “base”)? Or a generic question about LO installation, in which case tags “common” and “installation” should have been used?
Your question doesn’t contain enough information for any relevant answer.
Which OS?
How was the “older” version installed? Some “official” way or custom install?
Why do you want to uninstall the older version? Was an experimental version, no way with the new install process, was installed by someone else by “error”, failure with an automatic process, …?