# Sidekiq email error: no implicit conversion of nil into String
**URL:** https://meta.discourse.org/t/sidekiq-email-error-no-implicit-conversion-of-nil-into-string/40419
**Category:** Bug
**Created:** [02.Март.2016 00:26:30 UTC](https://meta.discourse.org/t/sidekiq-email-error-no-implicit-conversion-of-nil-into-string/40419 "2016-03-02T00:26:30Z")
**Posts on this page:** 4
**Page:** 2
### Author:  [@tuttle](https://meta.discourse.org/u/tuttle)
#### Post date: [30.Апрель.2016 09:18:06 UTC](https://meta.discourse.org/t/sidekiq-email-error-no-implicit-conversion-of-nil-into-string/40419/21 "2016-04-30T09:18:06Z")
I’m not familiar with building discourse.
I’m guessing it’s something like
./launcher enter app
git pull
???
Could you point me to some documentation?
Thanks.
---
### Author:  [@techAPJ](https://meta.discourse.org/u/techAPJ)
#### Post date: [30.Апрель.2016 09:25:59 UTC](https://meta.discourse.org/t/sidekiq-email-error-no-implicit-conversion-of-nil-into-string/40419/22 "2016-04-30T09:25:59Z")
> [@tuttle](#):
>
> Could you point me to some documentation?
```plaintext
./launcher rebuild app
```
That’s it 😉
---
### Author:  [@tuttle](https://meta.discourse.org/u/tuttle)
#### Post date: [30.Апрель.2016 16:09:12 UTC](https://meta.discourse.org/t/sidekiq-email-error-no-implicit-conversion-of-nil-into-string/40419/23 "2016-04-30T16:09:12Z")
> [@techAPJ](#):
>
> ./launcher rebuild app
Well, that was easy. 🙂
7 hrs now and no sign of the error.
Thanks.
---
### Author:  [@sam](https://meta.discourse.org/u/sam)
#### Post date: [02.Май.2016 02:58:35 UTC](https://meta.discourse.org/t/sidekiq-email-error-no-implicit-conversion-of-nil-into-string/40419/24 "2016-05-02T02:58:35Z")
[Предыдущая страница](https://meta.discourse.org/t/sidekiq-email-error-no-implicit-conversion-of-nil-into-string/40419.md?page=1)