How to avoid sql error, when deleting an event?

Question

When I try to delete an event with the SonarQube REST API I get an error:

{"err_code":500,"err_msg":"ActiveRecord::JDBCError: Unknown column 'scope' in 'where clause': SELECT * FROM snapshots WHERE (uuid = 'xxxxxxxxxxxxxxxx' AND scope = 'PRJ') LIMIT 1"}

I use SonarQube 6.2

How can I avoid this error?