Compile Bug issue ?

My game was working when i prepared the quests and everything worked but when closing the editor and reopen the editor it shows a error
Blueprint failed to compile: WB_QuestLog and then when i go to the error which sends me to the widget code create widget WB_Objectives i set it to none and then again to the Wb_Objectives and it works it does this everytime i reopen the editor and i have to do the same thing again why is UE5 doing this.
Is this a Bug in UE5?

Best Regards

does it give more detail on the error (double check the output log too) or just bp failed to compile.