Path must not contain // in them

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Android

Kotlin

I have made a social media app where users can upload there pic. I want to add a delete option for the users in the app. I want the users to delete their pic from Firebase cloud storage whenever needed. Here is my code

val firebase_url = contentDTOs[p1].imageUrl
            val storageRef =
                firebase_url?.let { it1 ->
                    FirebaseFirestore.getInstance().collection("images").document(
                        it1
                    )
                }

             storageRef?.delete()?.addOnSuccessListener {
                // File deleted successfully
                Toast.makeText(context , "Deleted",Toast.LENGTH_SHORT).show()

            }?.addOnFailureListener {
                // Uh-oh, an error occurred!
                Toast.makeText(context , "cannot delete",Toast.LENGTH_SHORT).show()
            }

            return@setOnLongClickListener true

But whenever I try to delete any image it returns me an error

E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.example.videoapp, PID: 20522
    java.lang.IllegalArgumentException: Invalid path (https://firebasestorage.googleapis.com/v0/b/video-app-af9bf.appspot.com/o/images%2FIMAGE_20201023_144632_.png?alt=media&token=9cd9d400-49ed-4f73-81b3-baa7668a8430). Paths must not contain // in them.

What I have tried:

I am trying to delete image from firebase