Variety subscription failed EOS_USDT_Futures_BinanceRe-testing, adding a second contract transaction pair will report this error?
The Little DreamOr it could be that this retesting period you have chosen is earlier, and FMZ data centers have not yet collected EOS market data.
The Little DreamFor the second exchange object added, it is exchanges in the code.[1] It is also necessary to set up contracts. Use:exchanges[1]. SetContractType function setting. There is also a digital currency introductory series of articles in the library, which you can read here.
inbitThis is the reason why I neglected it.