sdkhub.getFeePlugin() 获取不到

[jebe7282 (aliwangzai)]

2021-11-09 21:56:43.283 26541-26590/? D/jswrapper: JS: [ERROR]: (see stack) Uncaught TypeError: Cannot read property ‘feeForProduct’ of null [0]e.buy@assets/main/index.jsc:12997
拿到的是空。