Hyperleger Composer Playground Error - hyperledger-composer

I'm trying to start with Hyperledger Composer Playground, but when I access into this link:
https://composer-playground.mybluemix.net/editor
I found this error:
Error: Object with ID 'undefined' in collection with ID 'chaincodes' does not exist
I tried to use another browser and I cleaned the cache, but the error occur in any case, also locally. Sometimes the error doesn't appear but when I click on getting started, the load is infinite.
How can I fix it?
Thank You in advance.

can you try below steps may help
Clear browser local storage by running localStorage.clear() on browser console
Clear the browser history and cookies
restart your browser

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Update: strange thing I just noticed. When I try to save some article and I get that error and go back to overview page (where i.e. all articles of that type are listed) then I see unchanged article title. But when I click to edit it I see changed title?!? Like title on overview page and title on edit page are not used from the same place? How is that possible?
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Now even I setup once more project from scratch saving articles causes that error. Some more info:
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{"error":{"root_cause":[{"type":"resource_already_exists_exception","reason
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atus":400}
And when I run:
php bin/console ongr:es:index:create --manager=live
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In Connection.php line 675:
{"error":{"root_cause":[{"type":"resource_already_exists_exception","reason":"index [su_articles_live/Pissm9ycRj-o79K4wrrD
AA] already exists","index_uuid":"Pissm9ycRj-o79K4wrrDAA","index":"su_articles_live"}],"type":"resource_already_exists_exc
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Expected Case somebody else did edit the same article like you and did save it
Unexpected Case your phpcr cache is not in sync
Unexpected Case you have a multi server setup but your cache.app is not configured to use a central cache
So if its one of the unexpected cases first you should clear your cache.pools with:
bin/console cache:pool:prune
If you have a multi server setup make sure you configure a central cache. Most use in this case a redis-server which you configure in your cache.yaml e.g.:
# config/packages/prod/cache.yaml
framework:
cache:
default_redis_provider: "%env(resolve:REDIS_DSN)%"
app: cache.adapter.redis
Also make sure that you use the latest version and maybe update your phpcr cache configuration based on the sulu/skeleton: https://github.com/sulu/skeleton/blob/2.x/config/packages/prod/sulu_document_manager.yaml, there you could when performance doesn't matter in your case disable the phpcr cache, I would not recommend that.

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When I open up the app from it's deployment in FF on Windows 8, I get the first error once, and then I get the second error repeatedly and the app never loads(it just stays on my loading template from the iron router). My deployed app runs just fine on Chrome and I.E.
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Sorry that I provide any code, as I don't know what code I would post to solve this problem since I don't actually request anything from another server in code that I have written.
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If anyone is interested, it seems as if my combination of the aldeed:collectio2 package and one of my other packages was the cause of my problems. I removed this package and my issues went away.

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