# "dumpsys window windows" error when assertions are getting enable **URL:** \ **Category:** Support\ **Created:** [September 11, 2017, 8:01am UTC](https://discuss.appium.io/t/dumpsys-window-windows-error-when-assertions-are-getting-enable/18640 "2017-09-11T08:01:35Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![ackck](https://discuss.appium.io/letter_avatar_proxy/v4/letter/a/90db22/32.png) [@ackck](https://discuss.appium.io/u/ackck)\ **Post date:** [September 11, 2017, 8:01am UTC](https://discuss.appium.io/t/dumpsys-window-windows-error-when-assertions-are-getting-enable/18640/1 "2017-09-11T08:01:35Z")
Hello, i’m working on a test project with Eclipse and Appium(1.4.16.1) Android Driver on Windows. Before I enable assertions my project was running correctly. But I enabled assertions by Run Configurations / Arguments / VM arguments / -ea on Eclipse. Now, when I run my project the mobile application is opening then Appium logs consistently giving this error until I stop; info: [debug] Getting focused package and activity > info: [debug] executing cmd: C:\Users\MyPC\AppData\Local\Android\sdk\platform-tools\adb.exe -s FA537YJ07557 shell “dumpsys window windows” > info: [debug] Getting focused package and activity > info: [debug] executing cmd: C:\Users\MyPC\AppData\Local\Android\sdk\platform-tools\adb.exe -s FA537YJ07557 shell “dumpsys window windows” > info: [debug] Getting focused package and activity > info: [debug] executing cmd: C:\Users\MyPC\AppData\Local\Android\sdk\platform-tools\adb.exe -s FA537YJ07557 shell “dumpsys window windows” > info: [debug] Getting focused package and activity > info: [debug] executing cmd: C:\Users\MyPC\AppData\Local\Android\sdk\platform-tools\adb.exe -s FA537YJ07557 shell “dumpsys window windows” > info: [debug] Getting focused package and activity > info: [debug] executing cmd: C:\Users\MyPC\AppData\Local\Android\sdk\platform-tools\adb.exe -s FA537YJ07557 shell “dumpsys window windows” > … What is the source of this error and how can i solve this?