Issue Plesk Extension Internal server error

[blackmamba@1983]

Server operating system version

AlmaLinux OS 8.x 64-bit - Plesk

Plesk version and microupdate number

Plesk Obsidian Web Admin Edition Versione 18.0.45

Hello,
I have a server with AlmaLinux OS 8.x 64-bit - Plesk, I got an error that I could not access Extensions and got the following error message: Internal server error Retry I tried to retry many times but it didn't work.
I launch form SSH these commands
wget Plesk Extensions
with this result
***************
Resolving ext.plesk.com (ext.plesk.com)... failed: Name or service not known.
wget: unable to resolve host address ‘ext.plesk.com’
***************
also the command
curl Plesk Extensions
with this result
***************
curl: (6) Could not resolve host: ext.plesk.com

***************
someone could help me
?

 

[IgorG]

What are permissions and content of /etc/resolv.conf file?

 

[blackmamba@1983]

What are permissions and content of /etc/resolv.conf file?

Hi thanks for reply these are the permissions

 

[blackmamba@1983]

this the content

 

[IgorG]

Looks like the specified nameservers can't resolve ext.plesk.com hostname.
Try to add 8.8.8.8 or/and 1.1.1.1 nameservers there.

 

[blackmamba@1983]

nothing i have the same message