Transaction

[Error Code: 1101] error caused by: 1 error occurred:
	* transaction execute failed: [Error Code: 1101] cadence runtime error: Execution failed:
  --> ac345d62e61ed519f7bd62fa1ff4ec137cca7bed14c8bef1527c9eab7d20cada:34:34
   |
34 |         let nft: @TopShot.NFT  <- nftCollection.withdraw(withdrawID: nftId) as! @TopShot.NFT
   |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: panic: Cannot borrow: empty reference
    --> 0b2a3299cc857e29.TopShot:1103:19
     |
1103 |                 ?? panic("Cannot borrow: empty reference")
     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^