Transaction

[Error Code: 1101] error caused by: 1 error occurred:
	* transaction execute failed: [Error Code: 1101] cadence runtime error: Execution failed:
  --> a97b4cb1751834996da306e9ec608e3d27ea164b72e4c0ec3daaa8e557a243eb:35:4
   |
35 |     BackpackMinter.claimBackPack(tokenID: tokenID, signer: self.authSigner, setID: setID)
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: unexpectedly found nil while forcing an Optional value
  --> 807c3d470888cc48.BackpackMinter:30:21
   |
30 |     let collection = getAccount(signer.address).getCapability<&Flunks.Collection{Flunks.FlunksCollectionPublic}>(Flunks.CollectionPublicPath).borrow()!
   |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^