java.nio.file.InvalidPathException: Illegal char <?> at index 65: Smale1965 - An Infinite Dimensional Version of Sard's Theorem.pdf?accepttc=true
  at sun.nio.fs.WindowsPathParser.normalize(Unknown Source)
  at sun.nio.fs.WindowsPathParser.parse(Unknown Source)
  at sun.nio.fs.WindowsPathParser.parse(Unknown Source)
  at sun.nio.fs.WindowsPath.parse(Unknown Source)
  at sun.nio.fs.WindowsFileSystem.getPath(Unknown Source)
  at sun.nio.fs.AbstractPath.resolve(Unknown Source)
  at org.jabref.gui.fieldeditors.LinkedFileViewModel.lambda$download$375(LinkedFileViewModel.java:370)
  at org.jabref.gui.util.BackgroundTask$1.call(BackgroundTask.java:46)
  at org.jabref.gui.util.BackgroundTask$3.call(BackgroundTask.java:171)
  at org.jabref.gui.util.DefaultTaskExecutor$1.call(DefaultTaskExecutor.java:116)
  at javafx.concurrent.Task$TaskCallable.call(Task.java:1423)
  at java.util.concurrent.FutureTask.run(Unknown Source)
  at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
  at java.util.concurrent.FutureTask.run(Unknown Source)
  at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
  at java.lang.Thread.run(Unknown Source)