Graceful Errors - unregistered sign

[mixmix]

You haven't registered an account, you try to do a function like sign:

entropy sign -a mixmix "things"

file:///home/ENTROPY/cli/node_modules/@entropyxyz/sdk/dist/chunk-A3UVA2EN.js:20
  if (str.startsWith("0x"))
          ^

TypeError: Cannot read properties of undefined (reading 'startsWith')
    at stripHexPrefix (file:///home/ENTROPY/cli/node_modules/@entropyxyz/sdk/dist/chunk-A3UVA2EN.js:20:11)
    at SignatureRequestManager.formatTxRequest (file:///home/ENTROPY/cli/node_modules/@entropyxyz/sdk/dist/index.js:367:21)
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
    at async SignatureRequestManager.sign (file:///home/ENTROPY/cli/node_modules/@entropyxyz/sdk/dist/index.js:329:21)
    at async SignatureRequestManager.signWithAdaptersInOrder (file:///home/ENTROPY/cli/node_modules/@entropyxyz/sdk/dist/index.js:293:23)
    at async Entropy.signWithAdaptersInOrder (file:///home/ENTROPY/cli/node_modules/@entropyxyz/sdk/dist/index.js:840:12)
    at async EntropySign.signMessageWithAdapters (file:///home/ENTROPY/cli/dist/cli.js:11154:25)
    at async Command.<anonymous> (file:///home/ENTROPY/cli/dist/cli.js:12076:56)
    at async Command.parseAsync (/home/ENTROPY/cli/node_modules/commander/lib/command.js:1092:5)