You have issues on your database instance there. At times (often) when the system queries the database, the server is reporting tables dont exist, such as the topics table, the forums table and more. This is an issue on the database server side, rather than the software, but of course its logging this every time.
The other issue you have is that there is a field named 'choice' which has no default value in the table ibf_core_voters . This is not a default table. So you may be able to remove that column if you are not using that for any 3rd party item. Ensure you take a database backup before you do
