I'm fairly confident that this is being caused by missing images. For the errors shown in the console that read "ERR_FILE_NOT_FOUND" that show a filepath, you need to have those images in the folder at the end of that path ie. your games root folder should contain a folder called "img", within that there should be a folder called "system" and within that you need all the images that the console says are missing.
For ease, I would create a new project and just copy the "system" folder into your current project's "img" folder. If you've removed the contents of other folders this issue might continue, just follow the same process until you have the images you need.
For future reference, don't delete or rename folders that are already in the project when it's created unless you know what you're doing - 99% of the time all of the folders are necessary. For images it's probably not wise to remove any from the "system" folder as these are also required (you can replace them with different images with the same name though).