Hi, I'm using LemonLDAP::NG as an SSO and tried to configure it to work with OneDev using the Okta tutorial. I've got some errors.

Configurations

OneDev

LemonLDAP::NG

OpenID configuration seems correct : https://auth.aeris-one.fr/.well-known/openid-configuration

Errors

When trying to connect, I got redirected to LemonLDAP who ask me for consent, then back to OneDev with what seems a correct auth code. OneDev then returns a 500 error code.

Here are the OneCode logs:

2022-10-29 11:12:52,541 ERROR [qtp688457737-65] i.o.s.w.p.s.error.GeneralErrorPage Error serving request
org.apache.wicket.WicketRuntimeException: Can't instantiate page using constructor 'public io.onedev.server.web.page.admin.ssosetting.SsoProcessPage(org.apache.wicket.request.mapper.parameter.PageParameters)' and argument 'code=[8816d6962d60REDACTED], state=[OIDC-9e76REDACTED], session_state=[WdMw8mPZOcwMl7kdOyREDACTED], stage=[callback], connector=[LibraSSO]'. An exception has been thrown during construction!
        at org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:194)
        at org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:99)
        at org.apache.wicket.DefaultMapperContext.newPageInstance(DefaultMapperContext.java:106)
        at org.apache.wicket.core.request.handler.PageProvider.resolvePageInstance(PageProvider.java:271)
        at org.apache.wicket.core.request.handler.PageProvider.getPageInstance(PageProvider.java:169)
        at org.apache.wicket.core.request.handler.RenderPageRequestHandler.getPage(RenderPageRequestHandler.java:168)
        at io.onedev.server.web.WebApplication$8.shouldPreserveClientUrl(WebApplication.java:309)
        at org.apache.wicket.request.handler.render.WebPageRenderer.shouldPreserveClientUrl(WebPageRenderer.java:297)
        at org.apache.wicket.request.handler.render.WebPageRenderer.shouldRenderPageAndWriteResponse(WebPageRenderer.java:329)
        at org.apache.wicket.request.handler.render.WebPageRenderer.respond(WebPageRenderer.java:193)
        at org.apache.wicket.core.request.handler.RenderPageRequestHandler.respond(RenderPageRequestHandler.java:175)
        at org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:917)
        at org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:64)
        at org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:274)
        at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:231)
        at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:302)
        at org.apache.wicket.protocol.ws.AbstractUpgradeFilter.processRequestCycle(AbstractUpgradeFilter.java:70)
        at org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:203)
        at org.apache.wicket.protocol.http.WicketServlet.doGet(WicketServlet.java:137)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:687)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
        at io.onedev.server.web.DefaultWicketServlet.service(DefaultWicketServlet.java:43)
        at io.onedev.server.web.DefaultWicketServlet$$EnhancerByGuice$$156951980.GUICE$TRAMPOLINE(<generated>)
        at com.google.inject.internal.InterceptorStackCallback$InterceptedMethodInvocation.proceed(InterceptorStackCallback.java:74)
        at io.onedev.server.persistence.SessionInterceptor$1.call(SessionInterceptor.java:23)
        at io.onedev.server.persistence.DefaultSessionManager.call(DefaultSessionManager.java:85)
        at io.onedev.server.persistence.SessionInterceptor.invoke(SessionInterceptor.java:18)
        at com.google.inject.internal.InterceptorStackCallback$InterceptedMethodInvocation.proceed(InterceptorStackCallback.java:75)
        at com.google.inject.internal.InterceptorStackCallback.invoke(InterceptorStackCallback.java:55)
        at io.onedev.server.web.DefaultWicketServlet$$EnhancerByGuice$$156951980.service(<generated>)
        at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:799)
        at org.eclipse.jetty.servlet.ServletHandler$ChainEnd.doFilter(ServletHandler.java:1626)
        at com.google.inject.servlet.DefaultFilterPipeline.dispatch(DefaultFilterPipeline.java:47)
        at com.google.inject.servlet.GuiceFilter.doFilter(GuiceFilter.java:133)
        at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
        at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
        at io.onedev.server.git.GoGetFilter.doFilter(GoGetFilter.java:87)
        at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
        at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
        at io.onedev.server.git.GitLfsFilter.doFilter(GitLfsFilter.java:431)
        at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
        at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
        at io.onedev.server.git.GitFilter.doFilter(GitFilter.java:336)
        at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
        at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
        at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:61)
        at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108)
        at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137)
        at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:154)
        at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66)
        at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108)
        at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137)
        at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:154)
        at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66)
        at org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:458)
        at org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:373)
        at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90)
        at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83)
        at org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:387)
        at org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:370)
        at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:154)
        at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
        at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
        at io.onedev.server.util.jetty.DisableTraceFilter.doFilter(DisableTraceFilter.java:28)
        at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
        at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
        at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:548)
        at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
        at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1624)
        at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
        at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1434)
        at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)
        at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:501)
        at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1594)
        at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186)
        at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1349)
        at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
        at org.eclipse.jetty.server.handler.gzip.GzipHandler.handle(GzipHandler.java:763)
        at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
        at org.eclipse.jetty.server.Server.handle(Server.java:516)
        at org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:388)
        at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:633)
        at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:380)
        at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:277)
        at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311)
        at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105)
        at org.eclipse.jetty.io.ChannelEndPoint$1.run(ChannelEndPoint.java:104)
        at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:338)
        at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:315)
        at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:173)
        at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:131)
        at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:386)
        at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:883)
        at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1034)
        at java.base/java.lang.Thread.run(Thread.java:829)
Caused by: java.lang.reflect.InvocationTargetException: null
        at jdk.internal.reflect.GeneratedConstructorAccessor90.newInstance(Unknown Source)
        at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
        at org.apache.wicket.session.DefaultPageFactory.newPage(DefaultPageFactory.java:171)
        ... 94 common frames omitted
Caused by: java.lang.ClassCastException: class net.minidev.json.JSONArray cannot be cast to class java.lang.String (net.minidev.json.JSONArray is in unnamed module of loader java.net.URLClassLoader @7d20d0b; java.lang.String is in module java.base of loader 'bootstrap')
        at io.onedev.server.plugin.sso.openid.OpenIdConnector.processTokenResponse(OpenIdConnector.java:235)
        at io.onedev.server.plugin.sso.openid.OpenIdConnector.processLoginResponse(OpenIdConnector.java:198)
        at io.onedev.server.web.page.admin.ssosetting.SsoProcessPage.<init>(SsoProcessPage.java:74)
        ... 98 common frames omitted

And here are the LemonLDAP access logs (there are no errors on LemonLDAP side):

auth.aeris-one.fr:443 172.21.0.2 - - [29/Oct/2022:11:33:52 +0000] "GET /.well-known/openid-configuration HTTP/1.1" 200 5730 -
auth.aeris-one.fr:443 my.pc.ip.addr - aeris [29/Oct/2022:11:33:52 +0000] "GET /oauth2/authorize?scope=openid+email+profile&response_type=code&redirect_uri=https://forge.aeris-one.fr/sso/callback/LibraSSO&state=OIDC-2d81[REDACTED]&nonce=GGJqcyhCU[REDACTED]&client_id=eive2wi0[REDACTED] HTTP/2.0" 302 529 -
auth.aeris-one.fr:443 172.21.0.2 - - [29/Oct/2022:11:33:52 +0000] "POST /oauth2/token HTTP/1.1" 200 1602 -
auth.aeris-one.fr:443 172.21.0.2 - - [29/Oct/2022:11:33:52 +0000] "GET /oauth2/userinfo HTTP/1.1" 200 1023 -

Do you think my config is OK ? How could I resolve that ? Thanks for any response