update

src/algorithm/bellande_probability.rs

@@ -12,3 +12,6 @@
 
 // You should have received a copy of the GNU General Public License
 // along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+use crate::algorithm::connections::BellandeArchError;
+use bellande_step::make_bellande_probability_request;