Unable to enable app and no error but call and recall password


I have install Nexcloud an i try to add LDAP app.
but i can’t install any application. Nexcloud call and recall password…
i have no error (nginx ou nextcoud erros are empty …)

Can you help me please …
Thanks ans sorry for my bad english…

Nextcloud version : 11.0.3
Operating system and version (eg, Ubuntu 16.04): CentOS 7
Apache or nginx version : nginx
PHP version : 7.0
Is this the first time you’ve seen this error?:

I have found… my server is not on time (1 hour late).
now it is on time all is Ok.

Sorry for disturb.