plotly
diff --git a/‎_plotly_utils/basevalidators.py‎
Lines changed: 0 additions & 5 deletions b/‎_plotly_utils/basevalidators.py‎
Lines changed: 0 additions & 5 deletions
diff --git a/‎codegen/datatypes.py‎
Lines changed: 1 addition & 1 deletion b/‎codegen/datatypes.py‎
Lines changed: 1 addition & 1 deletion
diff --git a/‎js/src/Figure.js‎
Lines changed: 1 addition & 1 deletion b/‎js/src/Figure.js‎
Lines changed: 1 addition & 1 deletion
@@ -1565,11 +1565,6 @@ def data_class(self):
 
     def validate_coerce(self, v):
 
-        if isinstance(self.data_class, str):
-            raise ValueError(
-                "Invalid data_class of type 'string': {data_class}"
-                .format(data_class=self.data_class))
-
         if v is None:
             v = ()
 
 
@@ -171,7 +171,7 @@ def {literal_node.name_property}(self) -> {prop_type}:
     # property parent name
     # --------------------
     @property
-    def _parent_path(self) -> str:
+    def _parent_path_str(self) -> str:
         return '{node.parent_path_str}'
 
     # Self properties description
 
@@ -1628,7 +1628,7 @@ function performRestyleLike(parentArray, restyleData, restyleTraces) {
             // Set property value
             if (singleVal === null) {
                 _.unset(trace, rawKey);
-            } else {
+            } else if (singleVal !== undefined){
                 _.set(trace, rawKey, singleVal);
             }
         }
Original file line number	Diff line number	Diff line change
`@@ -1628,7 +1628,7 @@ function performRestyleLike(parentArray, restyleData, restyleTraces) {`
`1628`	`1628`	`// Set property value`
`1629`	`1629`	`if (singleVal === null) {`
`1630`	`1630`	`_.unset(trace, rawKey);`
`1631`		`- } else {`
	`1631`	`+ } else if (singleVal !== undefined){`
`1632`	`1632`	`_.set(trace, rawKey, singleVal);`
`1633`	`1633`	`}`
`1634`	`1634`	`}`