I just did it again. This time I renamed the original data directory in the ESP_AsyncFSBrowser directory and then copied the data directory from the fastled sketch so that it was the new data directory with the fastled web page. I did the transfer and then that web page came up. There was one error when looking at the network view with the developer tools. But that didn't stop the page from coming up or from moving the slider and pushing the button. The point being that it didn't crash and the file sizes were pretty big. But there were not a lot of files.
I just did it again. This time I renamed the original data directory in the ESP_AsyncFSBrowser directory and then copied the data directory from the fastled sketch so that it was the new data directory with the fastled web page. I did the transfer and then that web page came up. There was one error when looking at the network view with the developer tools. But that didn't stop the page from coming up or from moving the slider and pushing the button. The point being that it didn't crash and the file sizes were pretty big. But there were not a lot of files.