Transaction

[Error Code: 1101] error caused by: 1 error occurred:
	* transaction execute failed: [Error Code: 1101] cadence runtime error: Execution failed:
error: failed to save object: path /storage/NFLCollection in account 0x55071534b4197d85 already stores an object
  --> e203f374b67b4bd616bbc9808272d169f05a1196de1a9f0a5b1b92ece90dc392:11:24
   |
11 |                         acct.save<@NonFungibleToken.Collection>(<-collection, to: /storage/NFLCollection)
   |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^