This is a bugfix release. ## Fixes * SQLite failed with the error "database table locked" when the database is shared by several Gateway instances. (#273) * An error occured during the import if a new local server was created while another instance already had one with the same name. (#272) * removal of the '/' character at the beginning of the paths returned in the answer to the SFTP command `ls`. * A unicity constraint on the history database tables caused some errors. (#265) * The REST API returned wrong authorizations in the rules. (#266) * An SFTP server could start without an SSH key, which would cause connection errors. The error is now logged when the server starts. (#267)