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`
 --> 7068d3e8e7736af4d62f28460830710f3d899ff6dd7e55226b6f3df0105f4981:5:18
  |
5 |   prepare(signer: AuthAccount) {
  |                   ^^^^^^^^^^^ not found in this scope

error: cannot find variable in this scope: `AuthAccount`
  --> 7068d3e8e7736af4d62f28460830710f3d899ff6dd7e55226b6f3df0105f4981:11:18
   |
11 |     let account = AuthAccount(payer: signer)
   |                   ^^^^^^^^^^^ not found in this scope