Fix "value" to "values" typo
@@ -658,7 +658,7 @@ class Writer:
if wrong_length:
# Note: row numbers start at 0.
raise ProtocolError(
- "Expected %d values but got %d value, in row %d" %
+ "Expected %d values but got %d values, in row %d" %
(vpr, len(row), i))
yield row
