Message
The message body provided contains characters whose codes fall outside the allowed range. In order to ensure clear-signing compatiblity with hardware wallets, the message may only contain line feeds and characters in the range [\x20-\x7e].
What it means
Encoding and validating off-chain signed messages (application domain, format, length limits).
What to do
- Follow the off-chain message spec: version, application domain (32 bytes), format and length limits per format.