Migrating my Docker setup to a new docker, and I'm now getting a System.ArgumentException error | ErsatzTV | Page 1

lunar galleon Dec 13, 2025, 8:10 PM

#

Hi there!

So I am trying to migrate my server to a new docker instance and I'm getting the following:

[12:04:43 ERR] BackgroundService failed
System.ArgumentException: An item with the same key has already been added. Key: Pedro Pascal Shows
at System.Collections.Generic.Dictionary2.TryInsert(TKey key, TValue value, InsertionBehavior behavior) at System.Collections.Generic.Dictionary2.Add(TKey key, TValue value)
at ErsatzTV.Infrastructure.Search.SmartCollectionCache.Refresh() in /source/ErsatzTV.Infrastructure/Search/SmartCollectionCache.cs:line 33
at ErsatzTV.Infrastructure.Search.SmartCollectionCache.Refresh() in /source/ErsatzTV.Infrastructure/Search/SmartCollectionCache.cs:line 42
at ErsatzTV.Services.RunOnce.RebuildSearchIndexService.ExecuteAsync(CancellationToken stoppingToken) in /source/ErsatzTV/Services/RunOnce/RebuildSearchIndexService.cs:line 40
at Microsoft.Extensions.Hosting.Internal.Host.TryExecuteBackgroundServiceAsync(BackgroundService backgroundService)

I don't know how to solve this, as it was working fine previously on my last PC. I'd prefer not to completely redo my server.

Attaching the full logs as well.

📎 ersatztv_logs.txt

rough wedge Dec 13, 2025, 8:13 PM

#

first thing i would do is upgrade to the latest release, 25.2.0-docker-nvidia is quite old at this point - you need to switch tag from latest-nvidia to just latest

#

it looks like you found a way to create two smart collections with the same name. probably easiest to manually update your database

#

hmm

#

i think i can make an update to auto fix, in case any other users did the same thing

lunar galleon Dec 13, 2025, 8:18 PM

#

Haha Yeah I have no idea how I did that, because on my previous docker instance it worked fine, and this only happened after migrating. So I haven't touched the library between migrating.

I'll definitely update to :latest

Do you have a suggestion on how to manually update the database? If I do have 2 of the same smart collections, I definitely don't need them lol

rough wedge Dec 13, 2025, 8:21 PM

#

i need to do a proper fix since this is a bug that other people might hit. shouldn't take too long.

lunar galleon Dec 13, 2025, 8:22 PM

#

Oh ok! Cool. Let me know if you need me to provide any other files or send over my database.

rough wedge Dec 13, 2025, 8:24 PM

#

shouldn't be needed, thanks. i found that you can rename a smart collection and it doesn't check for the name to already exist there

rough wedge Dec 13, 2025, 9:08 PM

#

ok - please switch to docker tag d8122edad6fba1216071fdfb8b035277f8172a46 - it's like develop, but you won't automatically get develop updates. you can stay there until the next full release

#

it will automatically fix the duplicate name issue and prevent it going forward

#

you can certainly just use develop if you want

lunar galleon Dec 13, 2025, 9:36 PM

#

So I just pulled that docker image, and unfortunate I'm now getting these errors.

📎 ersatztv_logs2_.txt

rough wedge Dec 13, 2025, 9:41 PM

#

Can you dm me your db file

lunar galleon Dec 13, 2025, 9:51 PM

#

sure!

#

Just sent the dm

rough wedge Dec 13, 2025, 11:52 PM

#

ok the issue here is that you have Pedro Pascal Shows and Pedro Pascal shows. the database sees them as different (case-sensitive) but the search index sees them as the same (case-insensitive). i'll think about another fix

#

e.g. if you searched for smart_collection:"pedro pascal shows" it wouldn't know which smart collection you meant

rough wedge Dec 14, 2025, 12:41 AM

#

ok there's a new build again that should fix

lunar galleon Dec 14, 2025, 8:07 PM

#

Thanks for all your hands on troubleshooting Jason!

Unfortunately no dice yet. I did get further than I have before, but after the UI loads it crashes.

Here are the newer logs from just now. I tried it a couple of times as well, and left it running for a while too, was trying to see if I could get into the smart playlist screen to delete it manually before it crashed, but still din't work.

📎 ersatztv_logs4.txt

rough wedge Dec 14, 2025, 8:39 PM

#

you need to update to the latest build

#

% cat _ersatztv_logs\(4\).txt | grep "ErsatzTV version" | cut -d ' ' -f 5 | uniq
25.9.0-d8122eda-docker-amd64

#

tag is 6562d616fb8b2043d0bd9bbc9699847a9b18f5e5 or develop

lunar galleon Dec 15, 2025, 1:17 AM

#

Ah, I was using the old tag. Let me change that over to develop

#Migrating my Docker setup to a new docker, and I'm now getting a System.ArgumentException error