See the log file
/Users/user/Library/Containers/com.quest.Toad/Data/.metadata/.log.
log file:
!SESSION 2019-01-09 23:26:27.840 -----------------------------------------------
eclipse.buildId=unknown
java.version=1.8.0_191
java.vendor=Oracle Corporation
BootLoader constants: OS=macosx, ARCH=x86_64, WS=cocoa, NL=tr_TR
Framework arguments: -keyring /Users/user/.eclipse_keyring -showlocation
Command-line arguments: -os macosx -ws cocoa -arch x86_64 -keyring /Users/user/.eclipse_keyring -showlocation
!ENTRY org.eclipse.osgi 4 0 2019-01-09 23:26:30.361
!MESSAGE Application error
!STACK 1
java.lang.ExceptionInInitializerError
at com.btr.proxy.search.browser.ie.IEProxySearchStrategy.readSettings(IEProxySearchStrategy.java:57)
at com.btr.proxy.search.browser.ie.IEProxySearchStrategy.getProxySelector(IEProxySearchStrategy.java:42)
at com.btr.proxy.search.desktop.win.WinProxySearchStrategy.getProxySelector(WinProxySearchStrategy.java:37)
at com.btr.proxy.search.ProxySearch.getProxySelector(ProxySearch.java:193)
at com.quest.toad.auth.rest.ProxyProviderFactory.getProxyProvider(ProxyProviderFactory.java:81)
at com.quest.toad.auth.SignInService.getRestClient(SignInService.java:94)
at com.quest.toad.auth.SignInService.getSignInUri(SignInService.java:481)
at com.quest.toad.auth.SignInBrowserController.(SignInBrowserController.java:130)
at com.quest.toad.auth.SignInUI.open(SignInUI.java:126)
at com.quest.toad.auth.SignInProcess.evaluate(SignInProcess.java:77)
at com.quest.toad.edge.common.EdgeLifeCycleManager.postContextCreate(EdgeLifeCycleManager.java:135)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:55)
at org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:305)
at org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:233)
at org.eclipse.e4.core.contexts.ContextInjectionFactory.invoke(ContextInjectionFactory.java:107)
at org.eclipse.e4.ui.internal.workbench.swt.E4Application.lambda$0(E4Application.java:239)
at java.util.Optional.ifPresent(Optional.java:159)
at org.eclipse.e4.ui.internal.workbench.swt.E4Application.createE4Workbench(E4Application.java:235)
at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:614)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:594)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148)
at com.quest.toad.edge.common.EdgeApplication.start(EdgeApplication.java:70)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:388)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:653)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:590)
at org.eclipse.equinox.launcher.Main.run(Main.java:1499)
Caused by: java.lang.NullPointerException
at com.btr.proxy.search.desktop.win.DLLManager.closeStream(DLLManager.java:129)
at com.btr.proxy.search.desktop.win.DLLManager.copy(DLLManager.java:153)
at com.btr.proxy.search.desktop.win.DLLManager.extractToTempFile(DLLManager.java:119)
at com.btr.proxy.search.desktop.win.DLLManager.findLibFile(DLLManager.java:53)
at com.btr.proxy.search.desktop.win.Win32ProxyUtils.(Win32ProxyUtils.java:36)
ı see this error