AssetManager seems to load assets from cache and doesnt update (Question)

Hi, i've been trying to integrate Grapes for last few weeks into my VueJs project, but i got a question for the AssetManagement.

assetManager: {
    assets: ['http://localhost:3001/upload/hg_1920_1080.jpg'],
}

thats my simple assetManager configuration, for some reason it loads another Image i uploaded two weeks ago and doesnt update, no matter what i try. If i use assetManager.add('URL'), it says getAllVisible is one more, but it doesnt show anything. If i do assetManager.render() after adding, the html Element i get in return, just shows me the old image from before. Any suggestions ?

Thank You

Daniel