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`
 --> dfa4c101dd3f7422c63551b9943b4b90d3c749f7772e788c35de7a2ae965d773:3:20
  |
3 |     prepare(signer: AuthAccount) {
  |                     ^^^^^^^^^^^ not found in this scope

error: cannot find variable in this scope: `AuthAccount`
 --> dfa4c101dd3f7422c63551b9943b4b90d3c749f7772e788c35de7a2ae965d773:9:22
  |
9 |         let account = AuthAccount(payer: signer)
  |                       ^^^^^^^^^^^ not found in this scope