[Patch] Fix generateNewId same upload time bug
[Patch] Fix generateNewId same upload time bug

SWLBot/electronic-blackboard,Billy4195/electronic-blackboard,stvreumi/electronic-blackboard,SWLBot/electronic-blackboard,SWLBot/electronic-blackboard,stvreumi/electronic-blackboard,stvreumi/electronic-blackboard,Billy4195/electronic-blackboard,stvreumi/electronic-blackboard,Billy4195/electronic-blackboard,SWLBot/electronic-blackboard,Billy4195/electronic-blackboard