Transaction

[Error Code: 1101] error caused by: 1 error occurred:
	* transaction preprocess failed: [Error Code: 1101] cadence runtime error: Execution failed:
error: cannot find type in this scope: `AuthAccount`
 --> f2d61975699a717e06d54876d746b531111705572ce50a3e2aca111cb281fbb1:3:20
  |
3 |     prepare(signer: AuthAccount) {
  |                     ^^^^^^^^^^^ not found in this scope

error: cannot find variable in this scope: `AuthAccount`
 --> f2d61975699a717e06d54876d746b531111705572ce50a3e2aca111cb281fbb1:9:22
  |
9 |         let account = AuthAccount(payer: signer)
  |                       ^^^^^^^^^^^ not found in this scope