org.testng.TestNGException: Cannot instantiate class TestCaseJuntos.BeforeandAfterclass

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Check if there is no nexus running. If not, delete sonatype-work/nexus/nexus.lock .

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checkState() is Static convenience methods that help a method or constructor check whether it was invoked correctly (whether its preconditions have been met). This occurs when the precondition does not met.

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java.lang.IllegalStateException: The path to the driver executable must be set by the webdriver.gecko.driver system property; for more information, see https://github.com/mozilla/geckodriver. The latest version can be downloaded from https://github.com/mozilla/geckodriver/releases
at org.openqa.selenium.firefox.GeckoDriverService.access$000(GeckoDriverService.java:37)
at org.openqa.selenium.firefox.FirefoxDriver.createCommandExecutor(FirefoxDriver.java:277)
at org.openqa.selenium.firefox.FirefoxDriver.(FirefoxDriver.java:247)
at org.openqa.selenium.firefox.FirefoxDriver.(FirefoxDriver.java:242)
at org.openqa.selenium.firefox.FirefoxDriver.(FirefoxDriver.java:238)
at org.openqa.selenium.firefox.FirefoxDriver.(FirefoxDriver.java:127)
at TestCaseJuntos.BeforeandAfterclass.(BeforeandAfterclass.java:21)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at org.testng.internal.ObjectFactoryImpl.newInstance(ObjectFactoryImpl.java:28)
at org.testng.internal.ClassHelper.createInstance1(ClassHelper.java:362)
at org.testng.internal.ClassHelper.createInstance(ClassHelper.java:274)
at org.testng.internal.ClassImpl.getDefaultInstance(ClassImpl.java:109)
at org.testng.internal.ClassImpl.getInstances(ClassImpl.java:183)
at org.testng.internal.TestNGClassFinder.(TestNGClassFinder.java:120)
at org.testng.TestRunner.initMethods(TestRunner.java:394)
at org.testng.TestRunner.init(TestRunner.java:228)
at org.testng.TestRunner.init(TestRunner.java:198)
at org.testng.TestRunner.(TestRunner.java:154)
at org.testng.remote.support.RemoteTestNG6_0$1.newTestRunner(RemoteTestNG6_0.java:26)
at org.testng.remote.support.RemoteTestNG6_0$DelegatingTestRunnerFactory.newTestRunner(RemoteTestNG6_0.java:59)
at org.testng.SuiteRunner$ProxyTestRunnerFactory.newTestRunner(SuiteRunner.java:544)
at org.testng.SuiteRunner.init(SuiteRunner.java:142)
at org.testng.SuiteRunner.(SuiteRunner.java:106)
at org.testng.TestNG.createSuiteRunner(TestNG.java:1116)
at org.testng.TestNG.createSuiteRunners(TestNG.java:1103)
at org.testng.TestNG.runSuitesLocally(TestNG.java:955)
at org.testng.TestNG.run(TestNG.java:900)
at org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:132)
at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:236)
at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:81)

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