# Migrate a NodeBB forum with MongoDB to Discourse
**URL:** https://meta.discourse.org/t/migrate-a-nodebb-forum-with-mongodb-to-discourse/126553
**Category:** Sysadmins
**Tags:** how-to
**Created:** [August 22, 2019, 5:33pm UTC](https://meta.discourse.org/t/migrate-a-nodebb-forum-with-mongodb-to-discourse/126553 "2019-08-22T17:33:06Z")
**Posts on this page:** 1
**Showing post:** 19
### Author:  [@Twissell](https://meta.discourse.org/u/Twissell)
#### Post date: [March 1, 2026, 6:29pm UTC](https://meta.discourse.org/t/migrate-a-nodebb-forum-with-mongodb-to-discourse/126553/19 "2026-03-01T18:29:32Z")
```plaintext
importing users
182 / 182 (100.0%) [437953 items/min]
adding users to groups...
importing topics...
132 / 132 (100.0%) [3567036 items/min]
importing posts...
/home/dev/discourse/script/import_scripts/nodebb/mongo.rb:100:in 'NodeBB::Mongo#post': undefined method '[]' for nil (NoMethodError)
post["timestamp"] = timestamp_to_date(post["timestamp"])
^^^^^^^^^^^^^
from /home/dev/discourse/script/import_scripts/nodebb/mongo.rb:95:in 'block in NodeBB::Mongo#posts'
from /home/dev/discourse/script/import_scripts/nodebb/mongo.rb:95:in 'Array#map'
from /home/dev/discourse/script/import_scripts/nodebb/mongo.rb:95:in 'NodeBB::Mongo#posts'
from script/import_scripts/nodebb/nodebb.rb:413:in 'block in ImportScripts::NodeBB#import_posts'
from /home/dev/discourse/script/import_scripts/base.rb:943:in 'block in ImportScripts::Base#batches'
from :168:in 'Kernel#loop'
from /home/dev/discourse/script/import_scripts/base.rb:942:in 'ImportScripts::Base#batches'
from script/import_scripts/nodebb/nodebb.rb:412:in 'ImportScripts::NodeBB#import_posts'
from script/import_scripts/nodebb/nodebb.rb:52:in 'ImportScripts::NodeBB#execute'
from /home/dev/discourse/script/import_scripts/base.rb:47:in 'ImportScripts::Base#perform'
from script/import_scripts/nodebb/nodebb.rb:568:in ''
```
Users seems imported correctly according to script output, see above.
Sorry, are you living person or just smart enough AI-assistant?
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