All my grins and transaction history gone in my Niffler Wallet!? [solved]

Tech Support
1

I used Niffler 0.5.0 and Grin 3.11 (fully synced) on my WIndows 7 machine while simultaniosly browsing reddit. Suddenly both my web browser and niffler+grin crashed.

When I started my niffler+grin again, all my balance as well as my transaction history was missing.

I am still required to imput my password when I start niffler.

I have tried to run the “Check Balance”-thing in niffler but it just stops at 99% with the follownig error message:

20200406 13:03:31.397 ERROR grin_wallet_impls::node_clients::http - get_outputs_by_pmmr_index: error contacting http://127.0.0.1:3413. Error: Request error: Wrong response code: 404 Not Found with data Body
20200406 13:03:31.398 ERROR grin_wallet_controller::command - Wallet check failed: Client Callback Error: outputs by pmmr index: Request error: Wrong response code: 404 Not Found with data Body
20200406 13:03:31.398 ERROR grin_wallet_controller::command - Backtrace:
Wallet command failed: LibWallet Error: Client Callback Error: outputs by pmmr index: Request error: Wrong response code: 404 Not Found with data Body

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2

What went wrong and what steps am i required to take to restore my wallet balance?

I have a backup of the original wallet.seed file. Although when i open the file, the seed seems to be encrypted. I dont think I have the seed stored in an unencrypted format.

Please help! :disappointed:

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3

Is the ‘import wallet backup file’ greyed out and not clickable for you as well?

4

Not really sure about Niffler, but this might look like your connection to the Grin-Node has a problem. Did you try restarting the Grin-Node first ?

5

Wow. I went out biking in the forest for a couple of hours and when I came back home and started niffler+grin my balance and transaction history was back :grin:

I guess it somehow selfhealed. The crash was due to 0 MB pagefile and firefox + grin using up all available RAM.

Grumpy: I never saw that option. I did see the option “Remove current wallet” but was afraid to try it when I was unsure if unencrypted seed was somehow necessary to restore wallet.

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6

Yes, I restarted my Grin-Node as well as Niffler several times.

Now when I have got my balance back again and try “Check balance”, I still get the same error. So I guess that issue was unrelated to the vanishing of my grin balance :thinking:

7

The problem is , I am seeing similar errors on our Grinnode API and I am still debugging if its a Grin-Node problem.

20200406 16:44:45.208 DEBUG grin_wallet_impls::node_clients::http - Indices start
20200406 16:44:45.588 ERROR grin_wallet_impls::node_clients::http - heightstopmmr: error contacting https://grinnode.live. Error: Request error: Wrong response code: 404 Not Found with data Body
20200406 16:44:45.604 DEBUG grin_wallet_libwallet::api_impl::owner_updater - Starting UTXO scan
20200406 16:44:45.604 WARN grin_wallet_libwallet::api_impl::owner_updater - Scanning - 0% complete
Wallet command failed: LibWallet Error: Client Callback Error: : Request error: Wrong response code: 404 Not Found with data Body

8

We found the problem, sadly not to your problem @tonki, but perhaps this helps you.

We found this error on one of our Grinnode-Cluster:

>     Apr  6 16:47:10 c-node02 grin[16123]: 20200406 16:47:10.242 ERROR grin_servers::grin::sync::syncer - unexpected error: Error { inner:
>     Apr  6 16:47:10 c-node02 grin[16123]: Other Error: failed to find head hash }
>     Apr  6 16:47:11 c-node02 grin[16123]: 20200406 16:47:11.253 INFO grin_servers::grin::sync::syncer - sync: total_difficulty 1594050471240697, peer_difficulty 1594319307996247, threshold 2755485226 (last 5 blocks), enabling sync

Solution:
We did restart Grin-Node and it worked again.