Frequently Asked Questions

1. Setup Phase

Error: Validation: Unknown opcode 192

The reason is we have not support the opcode which is not belong the standard WASM mvp. However, you can eliminate the opcode with a third-party tool wasm-opt.

Try to use wasm-opt with --signext-lowering flag to eliminate the unsupported opcode, for example

wasm-opt -O3 pkg/zkwasm_rlp_bg.wasm -o zkwasm_rlp_bg.wasm --signext-lowering