Opening multiple instance of sketchup

when I am trying open extension’s multiple instances in multiple SketchUp’s instance. My extension is not working. I am using redux react for this extension.
the error i’m getting in inspect element is
Uncaught (in promise) Eventbubbles: truecancelBubble: falsecancelable: truecurrentTarget: nulldefaultPrevented: falseeventPhase: 0isTrusted: truepath: Array[0]returnValue: truesrcElement: IDBOpenDBRequesttarget: IDBOpenDBRequesttimeStamp: 3932.53type: "error"proto: Event