Payments failed on the Pi and the MT6000 with "NUT02: ID length invalid": cashuB tokens carry v2 keyset IDs in their 8-byte short form, and gonuts-tollgate v0.7.1 swapped with it instead of looking the full ID up at the mint. Patch its Receive/ReceiveHTLC; the package builds the daemon against a patched local copy of the module. Tested against minibits' live keysets; deployed to the MT6000 (generation 4). PITFALLS #54. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>