There was an error connecting sparrow to my Trezor wallet "Error parsing JSON"

[medoyley]

I have installed the sparrow wallet version 1.6.3 and connected with the Bitcoin Core. I have set up my Trezor wallet and everytime I try to create a new wallet with sparrow I get the message there was an error connecting to the wallet Error parsing JSON. I thought this error was fixed in version 1.55. Please advise.
Thanks

[craigraw]

Please look in the Sparrow log file (see Help menu) to find the full error, and paste it here. Please also supply your operating system, and at what point in the process you receive the error.

[medoyley]

Here are my sparrow logs from today's connecting error:
2022-05-11 13:04:17,718 ERROR [Thread-62] c.s.s.i
.Hwi [null:-1] Error parsing JSON:
com.sparrowwallet.sparrow.io.ImportException: Error scanning, check devices are ready
at com.sparrowwallet.sparrow@1.6.3/com.sparrowwallet.sparrow.io.Hwi.enumerate(Unknown Source)
at com.sparrowwallet.sparrow@1.6.3/com.sparrowwallet.sparrow.io.Hwi$ScheduledEnumerateService$1.call(Unknown Source)
at com.sparrowwallet.sparrow@1.6.3/com.sparrowwallet.sparrow.io.Hwi$ScheduledEnumerateService$1.call(Unknown Source)
at javafx.graphics/javafx.concurrent.Task$TaskCallable.call(Unknown Source)
at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
at javafx.graphics/javafx.concurrent.Service.lambda$executeTask$6(Unknown Source)
at java.base/java.security.AccessController.doPrivileged(Unknown Source)
at javafx.graphics/javafx.concurrent.Service.lambda$executeTask$7(Unknown Source)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.base/java.lang.Thread.run(Unknown Source)
2022-05-11 18:30:25,069 ERROR [Thread-89] c.s.s.i.Hwi [null:-1] Error parsing JSON:
com.sparrowwallet.sparrow.io.ImportException: Error scanning, check devices are ready
at com.sparrowwallet.sparrow@1.6.3/com.sparrowwallet.sparrow.io.Hwi.enumerate(Unknown Source)
at com.sparrowwallet.sparrow@1.6.3/com.sparrowwallet.sparrow.io.Hwi$EnumerateService$1.call(Unknown Source)
at com.sparrowwallet.sparrow@1.6.3/com.sparrowwallet.sparrow.io.Hwi$EnumerateService$1.call(Unknown Source)
at javafx.graphics/javafx.concurrent.Task$TaskCallable.call(Unknown Source)
at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
at javafx.graphics/javafx.concurrent.Service.lambda$executeTask$6(Unknown Source)
at java.base/java.security.AccessController.doPrivileged(Unknown Source)
at javafx.graphics/javafx.concurrent.Service.lambda$executeTask$7(Unknown Source)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.base/java.lang.Thread.run(Unknown Source)
I am using an HP laptop running Windows 11 Home V210H2 OS Build 22000.675
The error occurs when I am in sparrow I have created a new wallet and I am pressing the Connected Hardware Wallet Button. I then select Scan and while sparrow is scanning for the Trezor to connect I get the error message.
Let me know if you have any questions
Thanks

[craigraw]

It might caused by an anti-virus blocking the HWI executable Sparrow is trying to run.

Here's something you can try - open your Sparrow config file from the Sparrow home folder (see the FAQ to find this). While Sparrow is running, look for an entry called "hwi". Copy that path into your cmd command prompt and run it as follows: c:\path\to\hwi enumerate. Paste any output here.

[santochibtc]

Hi, I am having this problem with Windows 10, Sparrow 1.6.5 and a Bitbox02.
In the config file there is this line
"hwi": "C:\Users\XXXX\AppData\Roaming\Sparrow\hwi\hwi-2.1.1976653975542597384.tmp",
Changing the extension to exe and excuting the hwi enumerate command, the bitbox asks for the pin, I introduce the pin, the wallet is unlocked, but the hwi does not finish. Command does not end even with Ctrl+C.

[santochibtc]

Could be an issue with the HWI interface
bitcoin-core/HWI#613