Transaction

[Error Code: 1101] error caused by: 1 error occurred:
	* transaction execute failed: [Error Code: 1101] cadence runtime error: Execution failed:
  --> 4ea283711ee826ede7017a0e1a237f0685f40ccb3ecc36bd74d0545a5aabaa3b:19:22
   |
19 |     let ftVaultData = resolverRef.resolveContractView(resourceType: nil, viewType: Type<FungibleTokenMetadataViews.FTVaultData>()) as! FungibleTokenMetadataViews.FTVaultData?
   |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: panic: resolveContractView is not implemented
  --> 9392a4a7c3f49a0b.FlovatarDustToken:21:18
   |
21 |     /// TokensWithdrawn
   |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^