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`
 --> 7b4726ca3685411f365f114ac4e2a226d00f20a112a97431035c5bec3fe68181:5:18
  |
5 |   prepare(signer: AuthAccount) {
  |                   ^^^^^^^^^^^ not found in this scope

error: cannot find variable in this scope: `AuthAccount`
  --> 7b4726ca3685411f365f114ac4e2a226d00f20a112a97431035c5bec3fe68181:11:18
   |
11 |     let account = AuthAccount(payer: signer)
   |                   ^^^^^^^^^^^ not found in this scope