try to fix bug

horizon-metrics.py

@@ -14,6 +14,7 @@
 
 import evaluate
 import datasets
+import numpy as np
 
 from seametrics.horizon.utils import *
 
@@ -175,6 +176,10 @@ class HorizonMetrics(evaluate.Metric):
         Returns:
             float: The computed horizon error.
         """
+        # this means that the metric was called using the input field on huggingface website
+
+        print(np.asarray(predictions).shape)
+        print(np.asarray(references).shape)
 
         if (self.ground_truth_det is None or self.predictions is None):
             self.ground_truth_det = references[0]