Transaction

[Error Code: 1101] error caused by: 1 error occurred:
	* transaction preprocess failed: [Error Code: 1101] cadence runtime error: Execution failed:
error: invalid use of interface as type
 --> 0f4552f385e122b2338cf750f324ac7d88452cad7e4f13822c809388017d937a:3:11
  |
3 | let vault: @FungibleToken.Vault
  |            ^^^^^^^^^^^^^^^^^^^^ got `FungibleToken.Vault`; consider using `{FungibleToken.Vault}`

error: cannot find type in this scope: `AuthAccount`
 --> 0f4552f385e122b2338cf750f324ac7d88452cad7e4f13822c809388017d937a:4:16
  |
4 | prepare(signer: AuthAccount) {
  |                 ^^^^^^^^^^^ not found in this scope

error: value of type `&Account` has no member `getCapability`
  --> 0f4552f385e122b2338cf750f324ac7d88452cad7e4f13822c809388017d937a:11:1
   |
11 | .getCapability(/public/flowTokenReceiver)!
   |  ^^^^^^^^^^^^^ unknown member