PreparedStatement.executeQuery() has thrown a NullPointerException

We found this prefix in 5 webpages.
MapChildren (2)Typical messages (1)TraceDetailed Map
  1. java.lang.NullPointerException
    1.   at org.gjt.mm.mysql.PreparedStatement.executeQuery()
  1. NullPointerException

    Thread.run()
    Crashes:4
    Projects:0
    Web Pages:4
    Error Reports:0
    First:2 weeks ago
    Last:2 weeks ago
    preview
  2. NullPointerException  ??

    First:10 years ago
    Last:10 months ago
    Author:807603
MessageNumber of crashes
<No message>5
  1. java.lang.NullPointerException
    1.   at org.gjt.mm.mysql.PreparedStatement.executeQuery()