diff -r 8be80ea4f52b -r 250c5cbb8276 src/main/java/de/uapcore/lightpit/dao/IssueDao.java
--- a/src/main/java/de/uapcore/lightpit/dao/IssueDao.java	Sat Aug 29 16:48:15 2020 +0200
+++ b/src/main/java/de/uapcore/lightpit/dao/IssueDao.java	Sat Aug 29 17:13:09 2020 +0200
@@ -50,8 +50,9 @@
 
     /**
      * Lists all issues that are somehow related to the specified version.
+     * If version is null, search for issues that are not related to any version.
      *
-     * @param version the version
+     * @param version the version or null
      * @return a list of issues
      * @throws SQLException on any kind of SQL error
      */