add #5502

Author: Lms24

CHANGELOG.md

@@ -10,6 +10,7 @@
 - fix(node): Add conditions to TracingHandler.startTransaction (#5485)
 - fix(node): Adjust Express URL parameterization for array routes (#5495)
 - fix(node): Adjust Express URL parameterization for RegEx routes (#5483)
+- fix(node): Check if router exists before it is instrumented (#5502)
 - fix(node): Correctly handle Windows paths when resolving module name (#5476)
 - fix(node): Ensure that self._handler exists before calling it in LinkedErrors (#5497)
 - ref(tracing): Simplify sample_rate serialization for DSC (#5475)