Not starting up

Brian_Kane · July 4, 2026, 1:53am

Latest version, just downloaded
Big Sur 11.7.11

Worked fine yesterday, cannot find server today.

Brian_Kane · July 4, 2026, 5:25pm

I’ve tried different browsers, connection times out.

markus101 · July 7, 2026, 3:38pm

Sounds like it’s not running at all, have you tried manually starting it up again? You’ll need to include all the information requested when you opened this thread for us to assist further.

Brian_Kane · July 8, 2026, 12:16pm

I double click Sonarr in Applications or right click and select open, other than that, I do not know how to manually start it up. I apologize, but I do not know what other information to provide. I am using the latest version of firefox, I tried safari and chrome. I downloaded the latest version of Sonarr. I am on a late 2014 mini with 11.7.11 big sur installed.

markus101 · July 8, 2026, 3:42pm

Sonarr version (exact version):
Mono version (if Sonarr is not running on Windows):
OS:
Debug logs:
Description of issue:

Additional Information:
HOW TO PROVIDE DEBUG LOGS

Read the Logging and Log Files wiki section before posting - Sonarr Troubleshooting | Servarr Wiki
Change the Log Level to Debug in Sonarr’s General settings and then recreate your issue/wait for it to reoccur
Post the full contents of the log file (not a line or two, or just the error from the Events table) to one of the sites recommended in the wiki
Do NOT use pastebin.com as their filters have a tendency to block the logs
Do NOT copy and paste logs here or provide download links to log files
Do NOT edit, trim, or reformat the logs

Brian_Kane · July 8, 2026, 4:05pm

Sonarr version (exact version):Sonarr.main.4.0.19.2979.osx-x64-app
Mono version (if Sonarr is not running on Windows):don’t know what this is
OS:Big Sur 11.7.11
Debug logs:cannot access logs
Description of issue:Sonarr will not run. Using Firefox 152.0.4, and get this error “The connection has timed out. The server at localhost:8989 is taking too long to respond.” Same issue on Safari 14.1.3, cannot use Chrome.

markus101 · July 12, 2026, 9:36pm

You need to get the logs directly from the drive, the next entry in the FAQ discusses common locations, which is in Sonarr’s App Data folder.

MFT · July 12, 2026, 9:36pm

Not sure if the same issue, but this happened to me as well.
From what I can see in the log, it’s a .net issue in the latest build.

The latest package for Docker on LSIO was shipping without terminfo. Looks to now be updated and it’s where it should be ( /usr/share/terminfo)

Fatal|Microsoft.AspNetCore.Hosting.Diagnostics|Application startup exception

System.InvalidOperationException: The terminfo database is invalid.

Possibly for OSX you need to also be getting the ncurses-base (or equivalent) dependency in the package ?

Brian_Kane · July 15, 2026, 10:09pm

I can’t locate the logs. I have it running on my synology nas anyway.

markus101 · July 17, 2026, 9:02pm

In that case, glad you got it running somewhere, but you should figure out how to access the logs in the event the UI doesn’t load because you may need to some day.

Brian_Kane · August 4, 2026, 12:07pm

Here are the latest logs, I think.

[v4.0.19.2979] NzbDrone.Host.TerminateApplicationException: Application is being terminated. Reason : Another instance is already running
at NzbDrone.Host.SingleInstancePolicy.PreventStartIfAlreadyRunning() in ./Sonarr.Host/SingleInstancePolicy.cs:line 37
at NzbDrone.Host.Startup.EnsureSingleInstance(Boolean isService, IStartupContext startupContext, ISingleInstancePolicy instancePolicy) in ./Sonarr.Host/Startup.cs:line 313
at NzbDrone.Host.Startup.Configure(IApplicationBuilder app, IContainer container, IStartupContext startupContext, Lazy1 mainDatabaseFactory, Lazy1 logDatabaseFactory, DatabaseTarget dbTarget, ISingleInstancePolicy singleInstancePolicy, InitializeLogger initializeLogger, ReconfigureLogging reconfigureLogging, IAppFolderFactory appFolderFactory, IProvidePidFile pidFileProvider, IConfigFileProvider configFileProvider, IRuntimeInfo runtimeInfo, IFirewallAdapter firewallAdapter, IEventAggregator eventAggregator, SonarrErrorPipeline errorHandler) in ./Sonarr.Host/Startup.cs:line 226
at System.RuntimeMethodHandle.InvokeMethod(Object target, Span`1& arguments, Signature sig, Boolean constructor, Boolean wrapExceptions)
at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object parameters, CultureInfo culture)
at Microsoft.AspNetCore.Hosting.ConfigureBuilder.Invoke(Object instance, IApplicationBuilder builder)
at Microsoft.AspNetCore.Hosting.ConfigureBuilder.<>c__DisplayClass4_0.b__0(IApplicationBuilder builder)
at Microsoft.AspNetCore.Hosting.GenericWebHostBuilder.<>c__DisplayClass15_0.b__1(IApplicationBuilder app)
at Microsoft.AspNetCore.Mvc.Filters.MiddlewareFilterBuilderStartupFilter.<>c__DisplayClass0_0.g__MiddlewareFilterBuilder|0(IApplicationBuilder builder)
at Microsoft.AspNetCore.Hosting.GenericWebHostService.StartAsync(CancellationToken cancellationToken)

[v4.0.19.2979] NzbDrone.Host.TerminateApplicationException: Application is being terminated. Reason : Another instance is already running
at NzbDrone.Host.SingleInstancePolicy.PreventStartIfAlreadyRunning() in ./Sonarr.Host/SingleInstancePolicy.cs:line 37
at NzbDrone.Host.Startup.EnsureSingleInstance(Boolean isService, IStartupContext startupContext, ISingleInstancePolicy instancePolicy) in ./Sonarr.Host/Startup.cs:line 313
at NzbDrone.Host.Startup.Configure(IApplicationBuilder app, IContainer container, IStartupContext startupContext, Lazy1 mainDatabaseFactory, Lazy1 logDatabaseFactory, DatabaseTarget dbTarget, ISingleInstancePolicy singleInstancePolicy, InitializeLogger initializeLogger, ReconfigureLogging reconfigureLogging, IAppFolderFactory appFolderFactory, IProvidePidFile pidFileProvider, IConfigFileProvider configFileProvider, IRuntimeInfo runtimeInfo, IFirewallAdapter firewallAdapter, IEventAggregator eventAggregator, SonarrErrorPipeline errorHandler) in ./Sonarr.Host/Startup.cs:line 226
at System.RuntimeMethodHandle.InvokeMethod(Object target, Span`1& arguments, Signature sig, Boolean constructor, Boolean wrapExceptions)
at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object parameters, CultureInfo culture)
at Microsoft.AspNetCore.Hosting.ConfigureBuilder.Invoke(Object instance, IApplicationBuilder builder)
at Microsoft.AspNetCore.Hosting.ConfigureBuilder.<>c__DisplayClass4_0.b__0(IApplicationBuilder builder)
at Microsoft.AspNetCore.Hosting.GenericWebHostBuilder.<>c__DisplayClass15_0.b__1(IApplicationBuilder app)
at Microsoft.AspNetCore.Mvc.Filters.MiddlewareFilterBuilderStartupFilter.<>c__DisplayClass0_0.g__MiddlewareFilterBuilder|0(IApplicationBuilder builder)
at Microsoft.AspNetCore.Hosting.GenericWebHostService.StartAsync(CancellationToken cancellationToken)

2026-08-04 09:27:20.1|Info|Bootstrap|Application is being terminated. Reason : Another instance is already running

markus101 · August 4, 2026, 10:54pm

Looks like another instance is already running, preventing you from starting a second instance. Check Activity Monitor for the running instance and terminate it.

Brian_Kane · August 4, 2026, 10:58pm

That may have fixed it, The sign in page came up. If I have issues getting around that, I’ll post. Thank you.

Brian_Kane · August 4, 2026, 11:05pm

Authentication removed, all god.