NoOpAuthProvider does not support login using login form

Hi, after some changes related to maven repos ( unchecked local, and downloaded all again) + removing jespa dependency because not needed ( and had formerly added it to test it, but then chose basic ldap integration and it worked), I am not able to login anymore.
Tried disabling enableing/disabling cuba.web.externalAuthentication to fallback to normal login, but same error is shown .

Updated yesterday to 6.8 ( and worked fine yesterday).
Any clues ?

2018-02-03 12:46:33.578 ERROR [http-nio-8080-exec-3] com.haulmont.cuba.web.app.loginwindow.AppLoginWindow - Internal error during login
com.haulmont.cuba.security.global.InternalAuthenticationException: Exception is thrown by login provider
	at com.haulmont.cuba.web.security.ConnectionImpl.loginInternal(ConnectionImpl.java:225) ~[cuba-web-6.8.0.jar:6.8.0]
	at com.haulmont.cuba.web.security.ConnectionImpl.login(ConnectionImpl.java:89) ~[cuba-web-6.8.0.jar:6.8.0]
	at com.haulmont.cuba.web.app.loginwindow.AppLoginWindow.doLogin(AppLoginWindow.java:342) [cuba-web-6.8.0.jar:6.8.0]
	at com.haulmont.cuba.web.app.loginwindow.AppLoginWindow.doLogin(AppLoginWindow.java:311) [cuba-web-6.8.0.jar:6.8.0]
	at com.haulmont.cuba.web.app.loginwindow.AppLoginWindow.login(AppLoginWindow.java:257) [cuba-web-6.8.0.jar:6.8.0]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_151]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_151]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_151]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_151]
	at com.haulmont.cuba.gui.xml.DeclarativeAction.actionPerform(DeclarativeAction.java:92) [cuba-gui-6.8.0.jar:6.8.0]
	at com.haulmont.cuba.web.gui.components.WebButton.performAction(WebButton.java:44) [cuba-web-6.8.0.jar:6.8.0]
	at com.haulmont.cuba.web.gui.components.WebButton.lambda$new$61446b05$1(WebButton.java:36) [cuba-web-6.8.0.jar:6.8.0]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_151]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_151]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_151]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_151]
	at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:510) ~[vaadin-server-7.7.13.cuba.4.jar:7.7.13.cuba.4]
	at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:200) ~[vaadin-server-7.7.13.cuba.4.jar:7.7.13.cuba.4]
	at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:163) ~[vaadin-server-7.7.13.cuba.4.jar:7.7.13.cuba.4]
	at com.vaadin.server.AbstractClientConnector.fireEvent(AbstractClientConnector.java:1037) ~[vaadin-server-7.7.13.cuba.4.jar:7.7.13.cuba.4]
	at com.vaadin.ui.Button.fireClick(Button.java:377) ~[vaadin-server-7.7.13.cuba.4.jar:7.7.13.cuba.4]
	at com.haulmont.cuba.web.toolkit.ui.CubaButton.fireClick(CubaButton.java:54) ~[cuba-web-6.8.0.jar:6.8.0]
	at com.vaadin.ui.Button$1.click(Button.java:54) ~[vaadin-server-7.7.13.cuba.4.jar:7.7.13.cuba.4]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_151]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_151]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_151]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_151]
	at com.vaadin.server.ServerRpcManager.applyInvocation(ServerRpcManager.java:158) ~[vaadin-server-7.7.13.cuba.4.jar:7.7.13.cuba.4]
	at com.vaadin.server.ServerRpcManager.applyInvocation(ServerRpcManager.java:119) ~[vaadin-server-7.7.13.cuba.4.jar:7.7.13.cuba.4]
	at com.vaadin.server.communication.ServerRpcHandler.handleInvocation(ServerRpcHandler.java:444) ~[vaadin-server-7.7.13.cuba.4.jar:7.7.13.cuba.4]
	at com.vaadin.server.communication.ServerRpcHandler.handleInvocations(ServerRpcHandler.java:409) ~[vaadin-server-7.7.13.cuba.4.jar:7.7.13.cuba.4]
	at com.vaadin.server.communication.ServerRpcHandler.handleRpc(ServerRpcHandler.java:274) ~[vaadin-server-7.7.13.cuba.4.jar:7.7.13.cuba.4]
	at com.vaadin.server.communication.UidlRequestHandler.synchronizedHandleRequest(UidlRequestHandler.java:90) ~[vaadin-server-7.7.13.cuba.4.jar:7.7.13.cuba.4]
	at com.vaadin.server.SynchronizedRequestHandler.handleRequest(SynchronizedRequestHandler.java:41) ~[vaadin-server-7.7.13.cuba.4.jar:7.7.13.cuba.4]
	at com.vaadin.server.VaadinService.handleRequest(VaadinService.java:1435) ~[vaadin-server-7.7.13.cuba.4.jar:7.7.13.cuba.4]
	at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:361) ~[vaadin-server-7.7.13.cuba.4.jar:7.7.13.cuba.4]
	at com.haulmont.cuba.web.sys.CubaApplicationServlet.serviceAppRequest(CubaApplicationServlet.java:300) ~[cuba-web-6.8.0.jar:6.8.0]
	at com.haulmont.cuba.web.sys.CubaApplicationServlet.service(CubaApplicationServlet.java:191) ~[cuba-web-6.8.0.jar:6.8.0]
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:742) ~[servlet-api.jar:na]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) ~[catalina.jar:8.5.23]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[catalina.jar:8.5.23]
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) ~[tomcat-websocket.jar:8.5.23]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[catalina.jar:8.5.23]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[catalina.jar:8.5.23]
	at org.springframework.web.filter.CompositeFilter$VirtualFilterChain.doFilter(CompositeFilter.java:107) ~[spring-web-4.3.12.RELEASE.jar:4.3.12.RELEASE]
	at com.haulmont.cuba.web.auth.NoOpAuthProvider.doFilter(NoOpAuthProvider.java:40) ~[cuba-web-6.8.0.jar:6.8.0]
	at org.springframework.web.filter.CompositeFilter$VirtualFilterChain.doFilter(CompositeFilter.java:112) ~[spring-web-4.3.12.RELEASE.jar:4.3.12.RELEASE]
	at org.springframework.web.filter.CompositeFilter.doFilter(CompositeFilter.java:73) ~[spring-web-4.3.12.RELEASE.jar:4.3.12.RELEASE]
	at com.haulmont.cuba.web.sys.CubaHttpFilter.doFilter(CubaHttpFilter.java:107) ~[cuba-web-6.8.0.jar:6.8.0]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[catalina.jar:8.5.23]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[catalina.jar:8.5.23]
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199) ~[catalina.jar:8.5.23]
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) ~[catalina.jar:8.5.23]
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:478) ~[catalina.jar:8.5.23]
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140) ~[catalina.jar:8.5.23]
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81) ~[catalina.jar:8.5.23]
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:650) ~[catalina.jar:8.5.23]
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) ~[catalina.jar:8.5.23]
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342) ~[catalina.jar:8.5.23]
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803) ~[tomcat-coyote.jar:8.5.23]
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) ~[tomcat-coyote.jar:8.5.23]
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868) ~[tomcat-coyote.jar:8.5.23]
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1459) ~[tomcat-coyote.jar:8.5.23]
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-coyote.jar:8.5.23]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) ~[na:1.8.0_151]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) ~[na:1.8.0_151]
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-util.jar:8.5.23]
	at java.lang.Thread.run(Thread.java:748) ~[na:1.8.0_151]
Caused by: java.lang.UnsupportedOperationException: NoOpAuthProvider does not support login using login form
	at com.haulmont.cuba.web.auth.NoOpAuthProvider.authenticate(NoOpAuthProvider.java:31) ~[cuba-web-6.8.0.jar:6.8.0]
	at com.haulmont.cuba.web.security.providers.LegacyLoginProvider.login(LegacyLoginProvider.java:67) ~[cuba-web-6.8.0.jar:6.8.0]
	at com.haulmont.cuba.web.security.ConnectionImpl.loginInternal(ConnectionImpl.java:209) ~[cuba-web-6.8.0.jar:6.8.0]
	... 67 common frames omitted

Hi,

Please check if you changed cuba.web.externalAuthentication application property in you web-app.properties and deploy/tomcat/conf/app/local-app.properties. It should be set to false or just remove it from config file.

Since 6.8 LDAP integration should be enabled with cuba.web.ldap.enabled property, or you have to set cuba.web.externalAuthenticationProviderClass explicitly: https://doc.cuba-platform.com/manual-6.8/ldap_basic.html

The problem was that it could not contact the LDAP server so yes i had to set the externalAuthentication property to false.
Maybe the exception message should point to that direction.
Thank you