[bug]: unable to sweep funds > non-mandatory-script-verify-flag (Invalid Schnorr signature)

[stakoholic]

Hello, after my last channel was co-op closed few days ago from remote, i want to sweep all my funds and i get this message

FAIL: [lncli] rpc error: code = Unknown desc = unable to broadcast sweep transaction: unmatched backend error: -26: non-mandatory-script-verify-flag (Invalid Schnorr signature)

the bug was mentioned here raspiblitz/raspiblitz#3364 by @openoms and @guggero but cant find any further infos to this issue.

i have a raspberry pi 4 /4gb and raspiblitz v1.10 with Linux raspberrypi 6.1.21-v8+
bitcoind v25.0.0 + lnd 0.17.3-beta

[bitromortac]

Could you join https://lightning.engineering/slack.html and post a message there (and/or send me a dm), it could be easier to help interactively?

[stakoholic]

alright, thx

[dstadulis]

@stakoholic

• What date was the lnd instance / wallet first created? or if you're not certain, the earliest possible creation date
• Was it created on the raspberry pi?

[stakoholic]

@dstadulis yes it was created on the raspi and the creation date was at least 2 years ago

[dstadulis]

@stakoholic was the creation date before March 2022?

[stakoholic]

looked up for the first tx and it was August 2020