tqsdk2运行出错（找不到指定模块）请问是什么原因?

环境：python 11, win 10
Traceback (most recent call last):
File “D:Andyqtmain.py”, line 204, in
from tqsdk2 import TqApi,TqAccount,TqAuth,TargetPosTask,TqSim,TqBacktest,BacktestFinished
File “C:ProgramDataanaconda3Libsite-packagestqsdk2__init__.py”, line 13, in
from tqsdk2.tqsdk2 import TqApi
ImportError: DLL load failed while importing tqsdk2: 找不到指定的程序。