Error: Cannot wrap string value

[NavinThomsy]

Error: Cannot wrap string value "" as a json-rpc type; strings must be prefixed with "0x"

Please help with this.

[shamsulhusainansari]

Did you get the solution?

[liugezhou]

I also had this problem and did not find the cause。

[Sushantspatil]

JUST add the "0x" before the bytecode in the code