Manually made correction that is already implemented on master

model_server/accessors.py

@@ -115,6 +115,10 @@ class TifSingleSeriesFileAccessor(GenericImageFileAccessor):
             axs.append('C')
             da = np.expand_dims(da, len(da.shape))
 
+        if 'Z' not in axs:
+            axs.append('Z')
+            da = np.expand_dims(da, len(da.shape))
+
         yxcz = np.moveaxis(
             da,
             [axs.index(k) for k in order],