Updated code as per the comments

Author: sandeep-vedam

src/Router/utils/router.js

@@ -263,12 +263,17 @@ const init = config => {
     }
   }
   config.routes.forEach(item => {
-    const path = item.path
-    if (path.lastIndexOf('?') !== -1) {
+    let path = item.path
+    // Pattern to identify the last path of the route
+    // It should start with "/:" + any word  and ends with "?"
+    // Example /player/:asset/:assetId?
+    const pattern = /\/:{1}\w+\?$/
+    if (pattern.test(item.path)) {
       const optionalPath = path.substring(0, path.lastIndexOf('/'))
-      item.path = path.substring(0, path.lastIndexOf('?'))
+      const originalPath = path.substring(0, path.lastIndexOf('?'))
+      item.path = originalPath
       //Create another entry with the optional path
-      const optionalItem = { ...item }
+      let optionalItem = { ...item }
       optionalItem.path = optionalPath
       config.routes.push(optionalItem)
     }