# Mastodon error 422 Mastodon::HostValidationError Trying to Connect to PeerTube Instance on the same server
**URL:** https://forum.yunohost.org/t/mastodon-error-422-mastodon-hostvalidationerror-trying-to-connect-to-peertube-instance-on-the-same-server/31537
**Category:** Support apps
**Tags:** mastodon, peertube, english
**Created:** [October 20, 2024, 2:31am UTC](https://forum.yunohost.org/t/mastodon-error-422-mastodon-hostvalidationerror-trying-to-connect-to-peertube-instance-on-the-same-server/31537 "2024-10-20T02:31:15Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@boxingpreacher](https://forum.yunohost.org/u/boxingpreacher)
#### Post date: [October 20, 2024, 2:31am UTC](https://forum.yunohost.org/t/mastodon-error-422-mastodon-hostvalidationerror-trying-to-connect-to-peertube-instance-on-the-same-server/31537/1 "2024-10-20T02:31:15Z")
### I have searched the forum for similar issues
on
### This category is for issues regarding specific apps, _NOT_ general issues with YunoHost.
on
### This form is written in English 🇬🇧 but feel free to write in French 🇫🇷 if you’re more comfortable!
on
### What type of hardware are you using
Old laptop or computer
### What YunoHost version are you running
11.2.31
### What app is this about
Mastodon
### Describe your issue
Using Mastodon, I am trying to follow my account on PeerTube. Both, of course, are on the same server. But Mastodon returns the error:
422 Mastodon::HostValidationError
I tried the solution posted in [Trouble following WriteFreely blog from Mastodon instance on same server](https://forum.yunohost.org/t/trouble-following-writefreely-blog-from-mastodon-instance-on-same-server/28372) and added the following string to my /var/www/mastodon/live/.env.production:
`ALLOWED_PRIVATE_ADDRESSES=xx.xx.xx.xx`
Where the x’s are my actual ip address, of course. That didn’t change anything for me; I received the same 422 error.
### Share relevant logs or error messages
Mastodon error 422 Mastodon::HostValidationError
---
### Author:  [@ericg](https://forum.yunohost.org/u/ericg)
#### Post date: [October 20, 2024, 6:41am UTC](https://forum.yunohost.org/t/mastodon-error-422-mastodon-hostvalidationerror-trying-to-connect-to-peertube-instance-on-the-same-server/31537/2 "2024-10-20T06:41:21Z")
Just to be sure, did you restart Mastodon services?
---
### Author:  [@boxingpreacher](https://forum.yunohost.org/u/boxingpreacher)
#### Post date: [October 20, 2024, 8:45pm UTC](https://forum.yunohost.org/t/mastodon-error-422-mastodon-hostvalidationerror-trying-to-connect-to-peertube-instance-on-the-same-server/31537/3 "2024-10-20T20:45:35Z")
I hadn’t, because I’m kind of new to all of this. So I looked up how to do that, and I did the following:
- `systemctl start mastodon-sidekiq.service`
- `systemctl start mastodon-streaming.service`
-
```
systemctl start mastodon-web.service
```
… with hopeful anticipation. But sadly, same result. ☹
---
### Author:  [@ericg](https://forum.yunohost.org/u/ericg)
#### Post date: [October 20, 2024, 9:24pm UTC](https://forum.yunohost.org/t/mastodon-error-422-mastodon-hostvalidationerror-trying-to-connect-to-peertube-instance-on-the-same-server/31537/4 "2024-10-20T21:24:02Z")
for your information you can also use the webadmin to restart services : Tools → services → Mastodon → Restart
---
### Author:  [@boxingpreacher](https://forum.yunohost.org/u/boxingpreacher)
#### Post date: [October 20, 2024, 10:02pm UTC](https://forum.yunohost.org/t/mastodon-error-422-mastodon-hostvalidationerror-trying-to-connect-to-peertube-instance-on-the-same-server/31537/5 "2024-10-20T22:02:34Z")
lol… I can’t believe I missed that! But I’m newish, so thank you for that. Still the same results though.
---
### Author:  [@boxingpreacher](https://forum.yunohost.org/u/boxingpreacher)
#### Post date: [October 21, 2024, 4:04am UTC](https://forum.yunohost.org/t/mastodon-error-422-mastodon-hostvalidationerror-trying-to-connect-to-peertube-instance-on-the-same-server/31537/6 "2024-10-21T04:04:02Z")
Okay, adding back 127.0.0.1 and THEN restarting services did the trick. I’m learning! Thanks for the pointer!
So, to summarize, /var/www/mastodon/live/.env.production needs the following line added, where xx.xx.xx.xx is your actual IP address:
`ALLOWED_PRIVATE_ADDRESSES=xx.xx.xx.xx,127.0.0.1`
Then restart all three mastodon services in Tools → services → Mastodon → Restart
---
### Author:  [@system](https://forum.yunohost.org/u/system)
#### Post date: [November 5, 2024, 4:04am UTC](https://forum.yunohost.org/t/mastodon-error-422-mastodon-hostvalidationerror-trying-to-connect-to-peertube-instance-on-the-same-server/31537/7 "2024-11-05T04:04:06Z")
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