execute this statement in the Home component to pass type to action 
action
redux-thunk
execute this statement in the Home component to pass type to action
action
redux-thunk
this hint is clear. You need a middleware,. Our group uses redux-thunk.
found that thunk wrote in the wrong position for a long time, and then it didn't take effect, so it shouldn't be written on the second line! 
action
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