Can't update from 3.0.3.971 to 3.0.5.1143

The automatic update no longer works for me. The relevant log is shown below. OS Windows 10. Upgrading from v3.0.3.971 to 3.0.5.1143

21-4-9 02:08:22.1|Info|InstallUpdateService|Deleting old update files
21-4-9 02:08:22.1|Info|InstallUpdateService|Downloading update 3.0.5.1143
21-4-9 02:08:23.6|Info|InstallUpdateService|Verifying update package
21-4-9 02:08:23.8|Info|InstallUpdateService|Update package verified successfully
21-4-9 02:08:23.8|Info|InstallUpdateService|Extracting Update package
21-4-9 02:08:25.6|Info|InstallUpdateService|Update package extracted successfully
21-4-9 02:08:25.6|Info|BackupService|Starting Backup
21-4-9 02:08:27.8|Info|InstallUpdateService|Preparing client
21-4-9 02:08:34.4|Info|InstallUpdateService|Starting update client C:\Users\lukas\AppData\Local\Temp\sonarr_update\Sonarr.Update.exe
21-4-9 02:08:34.4|Info|InstallUpdateService|Sonarr will restart shortly.
21-4-9 02:08:34.4|Error|CommandExecutor|Error occurred while executing task ApplicationUpdate

[v3.0.3.971] System.ComponentModel.Win32Exception (0x80004005): The system cannot find the file specified
at System.Diagnostics.Process.StartWithCreateProcess(ProcessStartInfo startInfo)
at System.Diagnostics.Process.Start()
at NzbDrone.Common.Processes.ProcessProvider.Start(String path, String args, StringDictionary environmentVariables, Action1 onOutputDataReceived, Action1 onErrorDataReceived) in M:\BuildAgent\work\63739567f01dbcc2\src\NzbDrone.Common\Processes\ProcessProvider.cs:line 181
at NzbDrone.Core.Update.InstallUpdateService.InstallUpdate(UpdatePackage updatePackage) in M:\BuildAgent\work\63739567f01dbcc2\src\NzbDrone.Core\Update\InstallUpdateService.cs:line 149
at NzbDrone.Core.Update.InstallUpdateService.Execute(ApplicationUpdateCommand message) in M:\BuildAgent\work\63739567f01dbcc2\src\NzbDrone.Core\Update\InstallUpdateService.cs:line 261
at NzbDrone.Core.Messaging.Commands.CommandExecutor.ExecuteCommand[TCommand](TCommand command, CommandModel commandModel) in M:\BuildAgent\work\63739567f01dbcc2\src\NzbDrone.Core\Messaging\Commands\CommandExecutor.cs:line 96
at CallSite.Target(Closure , CallSite , CommandExecutor , Object , CommandModel )
at System.Dynamic.UpdateDelegates.UpdateAndExecuteVoid3[T0,T1,T2](CallSite site, T0 arg0, T1 arg1, T2 arg2)
at CallSite.Target(Closure , CallSite , CommandExecutor , Object , CommandModel )
at NzbDrone.Core.Messaging.Commands.CommandExecutor.ExecuteCommands() in M:\BuildAgent\work\63739567f01dbcc2\src\NzbDrone.Core\Messaging\Commands\CommandExecutor.cs:line 41

I’ve tried manually running the sonarr.update.exe and it just does nothing.

Any ideas here?