java.lang.exception: stack trace. at java.lang.Thread.dumpstack (Unknown Source)

When ever i go to a certaint area of my world I get this WARN on the Development Console: [Server thread/WARN] : Wrong location! (69, -46) should be 70, -46), abn ['Chicken'/ 1146011, 1='Johns World 2.0', x=1117.64, y=67.00, z=-729.35]
java.lang.Expecption: Stack trace
at java.lang.Thread.dumpstack (Unknown Source)