# Internal Server Error on Nextcloud after tweaking LDAP settings
**URL:** https://forum.yunohost.org/t/internal-server-error-on-nextcloud-after-tweaking-ldap-settings/10784
**Category:** Advanced use case
**Tags:** english
**Created:** [April 4, 2020, 1:16pm UTC](https://forum.yunohost.org/t/internal-server-error-on-nextcloud-after-tweaking-ldap-settings/10784 "2020-04-04T13:16:13Z")
**Posts on this page:** 13
**Page:** 1
### Author:  [@indibart](https://forum.yunohost.org/u/indibart)
#### Post date: [April 4, 2020, 1:16pm UTC](https://forum.yunohost.org/t/internal-server-error-on-nextcloud-after-tweaking-ldap-settings/10784/1 "2020-04-04T13:16:14Z")
Hi all!
I hope somebody can help me with this, I’m a bit out of ideas… 😰🤯
How can I restore my LDAP-Settings in Nextcloud?
### My YunoHost server
**Hardware:** Old laptop
**YunoHost version:** 3.7.0.12
**I have access to my server :** Through SSH and through the webadmin
**Are you in a special context or did you perform some particular tweaking on your YunoHost instance ?** : no
### Description of my issue
After upgrading Yunohost and Nextcloud all seemed good. Then I was checking the LDAP-Settings in Nextcloud. Since then I’m not able to reach Nextcloud anymore. I’m only getting an Internal Server Error:
> Internal Server Error
>
> The server was unable to complete your request.
> If this happens again, please send the technical details below to the server administrator.
> More details can be found in the server log.
As it happend after I was fiddling with the ldap settings in Nextcloud I think it must have a connection and I think this shows me I’m right:
```auto
sudo grep -i error /home/yunohost.app/nextcloud/data/nextcloud.log | tail
{"reqId":"Jb5Hd6lGv8flhlZPzhiI","level":2,"time":"2020-04-04T13:11:11+00:00","remoteAddr":"MYIP","user":"--","app":"user_ldap","method":"PROPFIND","url":"/nextcloud/remote.php/webdav/","message":"Configuration Error (prefix ): login filter does not contain %uid place holder.","userAgent":"Mozilla/5.0 (Linux) mirall/2.6.1stable (build 20191104) (Nextcloud)","version":"18.0.2.2"}
```
```auto
sudo -u nextcloud php7.3 /var/www/nextcloud/occ ldap:test-config s01
The configuration is invalid. Please have a look at the logs for further details.
```
But I’m not sure what I have done. So I was thinking of restoring the ldap settings from my old backup.
The `backup restore FullSystemBackup --system conf_ldap` seemed to have worked but didn’t change anything.
The `backup restore Nextcloud-Pre-Upgrade --apps` didn’t go through:
```auto
ended_at: 2020-04-04 11:55:44.867435
error: Operation unit has not been closed properly
operation: backup_restore_app
related_to:
- - app
- nextcloud
started_at: 2020-04-04 11:55:44.865748
success: false
============
2020-04-04 13:55:44,866: INFO - Restoring the app 'nextcloud'…
2020-04-04 13:55:44,867: ERROR - An app with the ID 'nextcloud' is already installed
```
Maybe there is a possibility to write the ldap settings manually but I don’t know how.
---
### Author:  [@indibart](https://forum.yunohost.org/u/indibart)
#### Post date: [April 4, 2020, 6:42pm UTC](https://forum.yunohost.org/t/internal-server-error-on-nextcloud-after-tweaking-ldap-settings/10784/2 "2020-04-04T18:42:13Z")
Followup:
Can anybody tell me what the %uid place holder is?
```auto
sudo -u nextcloud php7.3 /var/www/nextcloud/occ log:tail
Warning user_ldap Configuration Error (prefix ): login filter does not contain %uid place holder.
```
---
### Author:  [@Aleks](https://forum.yunohost.org/u/Aleks)
#### Post date: [April 5, 2020, 1:36am UTC](https://forum.yunohost.org/t/internal-server-error-on-nextcloud-after-tweaking-ldap-settings/10784/3 "2020-04-05T01:36:48Z")
Meh, idk, maybe try to check if you’re up to date with [https://github.com/YunoHost-Apps/nextcloud\_ynh/blob/testing/conf/config.json#L16-L39](https://github.com/YunoHost-Apps/nextcloud_ynh/blob/testing/conf/config.json#L16-L39) …
---
### Author:  [@indibart](https://forum.yunohost.org/u/indibart)
#### Post date: [April 5, 2020, 7:40am UTC](https://forum.yunohost.org/t/internal-server-error-on-nextcloud-after-tweaking-ldap-settings/10784/4 "2020-04-05T07:40:15Z")
Sometimes the obvious is the solution… Thanks a lot, I just needed that push! 😌
That solved it. 🥳
---
### Author:  [@unsui](https://forum.yunohost.org/u/unsui)
#### Post date: [April 6, 2020, 8:12am UTC](https://forum.yunohost.org/t/internal-server-error-on-nextcloud-after-tweaking-ldap-settings/10784/5 "2020-04-06T08:12:27Z")
Hello,
I have exactly the same problem, I was fiddling with the LDAP settings and Nextcloud crashed.
On the other hand, after reading your messages, I don’t understand what I should do.
Thank you in advance for your help.
---
### Author:  [@indibart](https://forum.yunohost.org/u/indibart)
#### Post date: [April 6, 2020, 8:41am UTC](https://forum.yunohost.org/t/internal-server-error-on-nextcloud-after-tweaking-ldap-settings/10784/6 "2020-04-06T08:41:15Z")
Do you have ssh-access to your server?
If yes, can you post the output of
`sudo -u nextcloud php7.3 /var/www/nextcloud/occ log:tail`
and
`sudo -u nextcloud php7.3 /var/www/nextcloud/occ ldap:show-config`
---
### Author:  [@unsui](https://forum.yunohost.org/u/unsui)
#### Post date: [April 6, 2020, 11:57am UTC](https://forum.yunohost.org/t/internal-server-error-on-nextcloud-after-tweaking-ldap-settings/10784/7 "2020-04-06T11:57:32Z")
This is :
> sudo -u nextcloud php7.3 /var/www/nextcloud/occ log:tail
>
> * * *
>
> Level App Message Time
>
> * * *
>
> Warning user\_ldap Configuration Error 2020-04-06T11:45:05+00:00
> (prefix ): login
> filter does not
> contain %uid place
> holder.
>
> Warning user\_ldap Configuration Error 2020-04-06T11:45:05+00:00
> (prefix ): login
> filter does not
> contain %uid place
> holder.
>
> Warning user\_ldap Configuration Error 2020-04-06T11:45:05+00:00
> (prefix ): login
> filter does not
> contain %uid place
> holder.
>
> Warning user\_ldap Configuration Error 2020-04-06T11:45:05+00:00
> (prefix ): login
> filter does not
> contain %uid place
> holder.
>
> Warning user\_ldap Configuration Error 2020-04-06T11:45:05+00:00
> (prefix ): login
> filter does not
> contain %uid place
> holder.
>
> Warning user\_ldap Configuration Error 2020-04-06T11:45:05+00:00
> (prefix ): login
> filter does not
> contain %uid place
> holder.
>
> Warning user\_ldap Configuration is 2020-04-06T11:45:05+00:00
> invalid, cannot
> connect
>
> Error user\_ldap No LDAP Connection to 2020-04-06T11:45:05+00:00
> server localhost
>
> Warning user\_ldap Configuration Error 2020-04-06T11:52:38+00:00
> (prefix ): login
> filter does not
> contain %uid place
> holder.
>
> Warning user\_ldap Configuration Error 2020-04-06T11:52:38+00:00
> (prefix ): login
> filter does not
> contain %uid place
> holder.
>
> * * *
> sudo -u nextcloud php7.3 /var/www/nextcloud/occ ldap:show-config
> ±------------------------------±------------------------------------+
> | Configuration | |
> ±------------------------------±------------------------------------+
> | hasMemberOfFilterSupport | 1 |
> | homeFolderNamingRule | |
> | lastJpegPhotoLookup | 0 |
> | ldapAgentName | |
> | ldapAgentPassword | \*\*\* |
> | ldapAttributesForGroupSearch | |
> | ldapAttributesForUserSearch | |
> | ldapBackupHost | |
> | ldapBackupPort | |
> | ldapBase | dc=yunohost,dc=org |
> | ldapBaseGroups | ou=groups,dc=yunohost,dc=org |
> | ldapBaseUsers | ou=users,dc=yunohost,dc=org |
> | ldapCacheTTL | 600 |
> | ldapConfigurationActive | 1 |
> | ldapDefaultPPolicyDN | |
> | ldapDynamicGroupMemberURL | |
> | ldapEmailAttribute | mail |
> | ldapExperiencedAdmin | 0 |
> | ldapExpertUUIDGroupAttr | |
> | ldapExpertUUIDUserAttr | |
> | ldapExpertUsernameAttr | uid |
> | ldapExtStorageHomeAttribute | |
> | ldapGidNumber | gidNumber |
> | ldapGroupDisplayName | cn |
> | ldapGroupFilter | objectClass=posixGroup |
> | ldapGroupFilterGroups | |
> | ldapGroupFilterMode | 0 |
> | ldapGroupFilterObjectclass | posixGroup |
> | ldapGroupMemberAssocAttr | |
> | ldapHost | localhost |
> | ldapIgnoreNamingRules | |
> | ldapLoginFilter | (&(&(|(objectclass=posixAccount)))) |
> | ldapLoginFilterAttributes | |
> | ldapLoginFilterEmail | 0 |
> | ldapLoginFilterMode | 0 |
> | ldapLoginFilterUsername | 1 |
> | ldapNestedGroups | 0 |
> | ldapOverrideMainServer | |
> | ldapPagingSize | 500 |
> | ldapPort | 389 |
> | ldapQuotaAttribute | userquota |
> | ldapQuotaDefault | |
> | ldapTLS | 0 |
> | ldapUserAvatarRule | default |
> | ldapUserDisplayName | displayname |
> | ldapUserDisplayName2 | |
> | ldapUserFilter | (&(|(objectclass=posixAccount))) |
> | ldapUserFilterGroups | |
> | ldapUserFilterMode | 0 |
> | ldapUserFilterObjectclass | posixAccount |
> | ldapUuidGroupAttribute | auto |
> | ldapUuidUserAttribute | auto |
> | turnOffCertCheck | 0 |
> | turnOnPasswordChange | 0 |
> | useMemberOfToDetectMembership | 1 |
> ±------------------------------±------------------------------------+
> ±------------------------------±------------+
> | Configuration | s01 |
> ±------------------------------±------------+
> | hasMemberOfFilterSupport | 0 |
> | homeFolderNamingRule | |
> | lastJpegPhotoLookup | 0 |
> | ldapAgentName | |
> | ldapAgentPassword | \*\*\* |
> | ldapAttributesForGroupSearch | |
> | ldapAttributesForUserSearch | |
> | ldapBackupHost | |
> | ldapBackupPort | |
> | ldapBase | |
> | ldapBaseGroups | |
> | ldapBaseUsers | |
> | ldapCacheTTL | 600 |
> | ldapConfigurationActive | 0 |
> | ldapDefaultPPolicyDN | |
> | ldapDynamicGroupMemberURL | |
> | ldapEmailAttribute | |
> | ldapExperiencedAdmin | 0 |
> | ldapExpertUUIDGroupAttr | |
> | ldapExpertUUIDUserAttr | |
> | ldapExpertUsernameAttr | |
> | ldapExtStorageHomeAttribute | |
> | ldapGidNumber | gidNumber |
> | ldapGroupDisplayName | cn |
> | ldapGroupFilter | |
> | ldapGroupFilterGroups | |
> | ldapGroupFilterMode | 0 |
> | ldapGroupFilterObjectclass | |
> | ldapGroupMemberAssocAttr | |
> | ldapHost | |
> | ldapIgnoreNamingRules | |
> | ldapLoginFilter | |
> | ldapLoginFilterAttributes | |
> | ldapLoginFilterEmail | 0 |
> | ldapLoginFilterMode | 0 |
> | ldapLoginFilterUsername | 1 |
> | ldapNestedGroups | 0 |
> | ldapOverrideMainServer | |
> | ldapPagingSize | 500 |
> | ldapPort | |
> | ldapQuotaAttribute | |
> | ldapQuotaDefault | |
> | ldapTLS | 0 |
> | ldapUserAvatarRule | default |
> | ldapUserDisplayName | displayName |
> | ldapUserDisplayName2 | |
> | ldapUserFilter | |
> | ldapUserFilterGroups | |
> | ldapUserFilterMode | 0 |
> | ldapUserFilterObjectclass | |
> | ldapUuidGroupAttribute | auto |
> | ldapUuidUserAttribute | auto |
> | turnOffCertCheck | 0 |
> | turnOnPasswordChange | 0 |
> | useMemberOfToDetectMembership | 1 |
> ±------------------------------±------------+
---
### Author:  [@indibart](https://forum.yunohost.org/u/indibart)
#### Post date: [April 6, 2020, 12:40pm UTC](https://forum.yunohost.org/t/internal-server-error-on-nextcloud-after-tweaking-ldap-settings/10784/8 "2020-04-06T12:40:58Z")
You have the same problem I had. ldapLoginFilter is missing a “%uid”. That’s what the warning in your log file says:
> [@unsui](#):
>
> Warning user\_ldap Configuration Error 2020-04-06T11:52:38+00:00
> (prefix ): login
> filter does not
> contain %uid place
> holder.
And you can see in the ldap-config-file that there is no “%uid” in the ldapLoginFilter:
> [@unsui](#):
>
> ldapLoginFilter | (&(&(|(objectclass=posixAccount))))
So the solution is to set the ldapLoginFilter with the correct value. Over ssh do:
`sudo -u nextcloud php7.3 /var/www/nextcloud/occ ldap:set-config "" ldap_login_filter "(&(|(objectclass=posixAccount))(uid=%uid))"`
That should fix it.
---
### Author:  [@unsui](https://forum.yunohost.org/u/unsui)
#### Post date: [April 6, 2020, 3:06pm UTC](https://forum.yunohost.org/t/internal-server-error-on-nextcloud-after-tweaking-ldap-settings/10784/9 "2020-04-06T15:06:49Z")
That did indeed solve the problem. Great.
Thank you very much !
---
### Author:  [@unsui](https://forum.yunohost.org/u/unsui)
#### Post date: [April 6, 2020, 3:10pm UTC](https://forum.yunohost.org/t/internal-server-error-on-nextcloud-after-tweaking-ldap-settings/10784/10 "2020-04-06T15:10:46Z")
Does that mean you shouldn’t mess around with ldap settings?
I didn’t want to change the configuration, I was looking at it out of curiosity and I don’t know what happened.
---
### Author:  [@Aleks](https://forum.yunohost.org/u/Aleks)
#### Post date: [April 6, 2020, 3:41pm UTC](https://forum.yunohost.org/t/internal-server-error-on-nextcloud-after-tweaking-ldap-settings/10784/11 "2020-04-06T15:41:22Z")
> [@unsui](#):
>
> Does that mean you shouldn’t mess around with ldap settings?
Uh in the ideal world, yes … Then if you have some legitimate use case and know what you’re doing, might be okay, but you gotta be careful and expect to know how to fix your setup if it breaks … Otherwise we the Yunohost support team end up helping people with their super-specific use-case about advanced-tweaking instead of having fixes and features for people with regular use cases …
> [@unsui](#):
>
> I was looking at it out of curiosity and I don’t know what happened.
Did you just looked at them … or tortured them ? 🤔 😉
---
### Author:  [@unsui](https://forum.yunohost.org/u/unsui)
#### Post date: [April 6, 2020, 4:10pm UTC](https://forum.yunohost.org/t/internal-server-error-on-nextcloud-after-tweaking-ldap-settings/10784/12 "2020-04-06T16:10:14Z")
> [@Aleks](#):
>
> Did you just looked at them … or tortured them ? 🤔 😉
Ok, I confess 😅, I went through the settings a bit but only a few clicks without changing any values. I guess 🤔
Anyway, this section is now called : “Don’t touch it, dumbass !”
---
### Author:  [@system](https://forum.yunohost.org/u/system)
#### Post date: [April 21, 2020, 4:10pm UTC](https://forum.yunohost.org/t/internal-server-error-on-nextcloud-after-tweaking-ldap-settings/10784/13 "2020-04-21T16:10:15Z")
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