Hi Takuto Kawauchi,
The message 'Java action was not implemented' means that there is a Java Action you call in your microflow and that one throws an exception, indicating the actual Java code is missing. So in the subflow 'ACT_GetQuotationsApiCall_Add' there is a Java Action named 'WaitAction', which caused this.
Did you create this JavaAction yourself or did the content got removed?
Good luck!
\javasource\module\actions~を編集したらかいけつしました