Chapter 2, Part 2: "Iterator already obtained" when trying findAllImages

[olegkamuz]

ERROR 1321 --- [nio-9000-exec-1] a.w.r.e.AbstractErrorWebExceptionHandler : [63a112d1] 500 Server Error for HTTP GET "/"

java.lang.IllegalStateException: Iterator already obtained
at java.base/sun.nio.fs.UnixDirectoryStream.iterator(UnixDirectoryStream.java:118) ~[na:na]

[olegkamuz]

For now this fix works:
https://gist.github.com/olegkamuz/9bf4d4b61307adf7fb5ad7bb8ecad149
or
https://gist.github.com/olegkamuz/41df0224cdfcd1175b60600c8406d13d