Post History
#3: Post edited
by
Trilarion
·
2022-01-09T11:42:13Z (almost 3 years ago)
How to fix 500 Server Error "NoMethodError: undefined method `id' for nil:NilClass"?
- How to fix NoMethodError: undefined method `id' for nil:NilClass when visiting the QPixel homepage?
#2: Post edited
by
Trilarion
·
2022-01-08T14:19:33Z (almost 3 years ago)
- Following the [set up guide](https://collab.codidact.org/posts/280451/280452#answer-280452) I was able to start rails server and got my very first QPixel page served (see screenshot):
- 
Unfortunately it was a `500 Server Error`, which I did not expect and which wasn't mentioned in the guide. Attached is part of the console output which speaks of a `NoMethodError (undefined method `id' for nil:NilClass)`.- ```
- Started GET "/" for 127.0.0.1 at 2022-01-06 09:55:55 +0100
- [...]
- NoMethodError (undefined method `id' for nil:NilClass):
- [...]
- Completed 500 Internal Server Error in 360ms (Views: 204.1ms | ActiveRecord: 26.5ms)
- ```
- Is this intended behavior or a bug (and if so how to fix it)?
- I tried to continue with the guide and signed up a user, but that didn't change anything about the error. It seems like the dev community is not set up correctly.
- In trying to reach this point I repeated steps of the manual several times (and encountered other errors), so maybe I compromised the state of the installation somewhere. I will repeat the guide on a clean system again to be sure. Nevertheless this question should remain as something that might happen to others as well.
- Following the [set up guide](https://collab.codidact.org/posts/280451/280452#answer-280452) I was able to start rails server and got my very first QPixel page served (see screenshot):
- 
- Unfortunately it was a `500 Server Error`, which I did not expect and which wasn't mentioned in the guide. Attached is part of the console output which speaks of a `NoMethodError (undefined method `id' for nil:NilClass)`. It's incomplete because of a [cloudflare block](https://collab.codidact.org/posts/285488), more of it is [here](https://gist.github.com/Trilarion/759cd28877179b28f9a387d400d47294).
- ```
- Started GET "/" for 127.0.0.1 at 2022-01-06 09:55:55 +0100
- [...]
- NoMethodError (undefined method `id' for nil:NilClass):
- [...]
- Completed 500 Internal Server Error in 360ms (Views: 204.1ms | ActiveRecord: 26.5ms)
- ```
- Is this intended behavior or a bug (and if so how to fix it)?
- I tried to continue with the guide and signed up a user, but that didn't change anything about the error. It seems like the dev community is not set up correctly.
- In trying to reach this point I repeated steps of the manual several times (and encountered other errors), so maybe I compromised the state of the installation somewhere. I will repeat the guide on a clean system again to be sure. Nevertheless this question should remain as something that might happen to others as well.
#1: Initial revision
by
Trilarion
·
2022-01-08T14:17:51Z (almost 3 years ago)
How to fix 500 Server Error "NoMethodError: undefined method `id' for nil:NilClass"?
Following the [set up guide](https://collab.codidact.org/posts/280451/280452#answer-280452) I was able to start rails server and got my very first QPixel page served (see screenshot):  Unfortunately it was a `500 Server Error`, which I did not expect and which wasn't mentioned in the guide. Attached is part of the console output which speaks of a `NoMethodError (undefined method `id' for nil:NilClass)`. ``` Started GET "/" for 127.0.0.1 at 2022-01-06 09:55:55 +0100 [...] NoMethodError (undefined method `id' for nil:NilClass): [...] Completed 500 Internal Server Error in 360ms (Views: 204.1ms | ActiveRecord: 26.5ms) ``` Is this intended behavior or a bug (and if so how to fix it)? I tried to continue with the guide and signed up a user, but that didn't change anything about the error. It seems like the dev community is not set up correctly. In trying to reach this point I repeated steps of the manual several times (and encountered other errors), so maybe I compromised the state of the installation somewhere. I will repeat the guide on a clean system again to be sure. Nevertheless this question should remain as something that might happen to others as well.