Unable to run Kitty Items against testnet

I am getting the following error after authorising with Blockto:

Error: 2 errors occurred: * rpc error: code = Internal desc = failed to execute the script on the execution node execution-5f6c73a22445d7d958c6a37c1f3be99c72cacd39894a3e46d6647a9adb007b4d@execution-001.devnet26.nodes.onflow.org:3569=100: rpc error: code = Internal desc = failed to execute script: failed to execute script at block (44544886ee483d5029cc85e25e3bb8a816d5f37b9d5e4b9d9a15b708d6d0802a): [Error Code: 1101] cadence runtime error Execution failed: error: cannot find declaration `FUSD` in `42c684720e3320ea.FUSD` --> e4414a2bc70a2e389b2d3337398d4dfc94c22da4e976834620d75cbaa86bdce5:3:9 | 3 | import FUSD from 0x42c684720e3320ea | ^^^^ available exported declarations are:

error: cannot infer type parameter: T
→ e4414a2bc70a2e389b2d3337398d4dfc94c22da4e976834620d75cbaa86bdce5:8:25
|
8 | let receiver: Bool = getAccount(address)
| ^

error: cannot infer type parameter: T
→ e4414a2bc70a2e389b2d3337398d4dfc94c22da4e976834620d75cbaa86bdce5:12:24
|
12 | let balance: Bool = getAccount(address)
| ^

* rpc error: code = Internal desc = failed to execute the script on the execution node execution-a1f059a3e00347e585658e4c400be1580ba2e2f6d1f39387ad62e33f3f4d246d@execution-002.devnet26.nodes.onflow.org:3569=100: rpc error: code = Internal desc = failed to execute script: failed to execute script at block (44544886ee483d5029cc85e25e3bb8a816d5f37b9d5e4b9d9a15b708d6d0802a): [Error Code: 1101] cadence runtime error Execution failed:

error: cannot find declaration FUSD in 42c684720e3320ea.FUSD
→ e4414a2bc70a2e389b2d3337398d4dfc94c22da4e976834620d75cbaa86bdce5:3:9
|
3 | import FUSD from 0x42c684720e3320ea
| ^^^^ available exported declarations are:

error: cannot infer type parameter: T
→ e4414a2bc70a2e389b2d3337398d4dfc94c22da4e976834620d75cbaa86bdce5:8:25
|
8 | let receiver: Bool = getAccount(address)
| ^

error: cannot infer type parameter: T
→ e4414a2bc70a2e389b2d3337398d4dfc94c22da4e976834620d75cbaa86bdce5:12:24
|
12 | let balance: Bool = getAccount(address)
| ^

Can you provide more context? What are you trying to do? What network are you using?