diff --git a/holoviews/element/util.py b/holoviews/element/util.py
index f6eee078d1..d84bb2cebc 100644
--- a/holoviews/element/util.py
+++ b/holoviews/element/util.py
@@ -24,6 +24,8 @@
 if TYPE_CHECKING:
     from typing import TypeVar
 
+    import pandas as pd
+
     Array = TypeVar("Array", np.ndarray, pd.api.extensions.ExtensionArray)
 
 
@@ -349,6 +351,8 @@ def connect_edges(graph):
 
 
 def sort_arr(arr: Array) -> Array:
+    import pandas as pd
+
     if isinstance(arr, pd.api.extensions.ExtensionArray):
         return arr[arr.argsort()]
     return np.sort(arr)
diff --git a/holoviews/streams.py b/holoviews/streams.py
old mode 100755
new mode 100644
index 7be4fc542c..94a213b650
--- a/holoviews/streams.py
+++ b/holoviews/streams.py
@@ -593,7 +593,6 @@ def __init__(self, data, length=1000, index=True, following=True, **params):
 
 
     def verify(self, x):
-        """ Verify consistency of dataframes that pass through this stream """
         """Verify consistency of dataframes that pass through this stream
 
         """