newsfragment for #2156

ethereum · Mar 15, 2024 · d4fd330 · d4fd330
1 parent 717c191
commit d4fd330
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diff --git a/eth/tools/fixtures/helpers.py b/eth/tools/fixtures/helpers.py
@@ -135,7 +135,7 @@ def transition_test_at_timestamp(
             return ((0, initial_vm),)
 
         raise ValidationError(
-            "Not a known transition test format - transition_block is ``None``."
+            "Not a known transition test format: transition_block==None."
         )
 
     return (

diff --git a/newsfragments/2156.bugfix.rst b/newsfragments/2156.bugfix.rst
@@ -0,0 +1 @@
+bugfix: Address issues instantiating VM at Cancun transition.