Why doesn't another router, another vlan ping?

Question

Cisco

There is such a network:

Here is what is on Servers01

4 vlan. Each separate Vlan has a separate server. Trunks for all four vlans are thrown between routers.
On the router srv-r0 it is written:

interface GigabitEthernet0/0
no ip address
duplex auto
speed auto
!
interface GigabitEthernet0/0.11
encapsulation dot1Q 11
no ip address
!
interface GigabitEthernet0/0.12
encapsulation dot1Q 12
no ip address
!
interface GigabitEthernet0/0.13
encapsulation dot1Q 13
no ip address
!
interface GigabitEthernet0/0.20
encapsulation dot1Q 20
no ip address
!
interface GigabitEthernet0/1
no ip address
duplex auto
speed auto
!
interface GigabitEthernet0/1.11
encapsulation dot1Q 11
ip address 192.168.11.1 255.255.255.0
ip helper-address 192.168.13.10
!
interface GigabitEthernet0/1.12
encapsulation dot1Q 12
ip address 192.168.12.1 255.255.255.0
ip helper-address 192.168.13.10
!
interface GigabitEthernet0/1.13
encapsulation dot1Q 13
ip address 192.168.13.1 255.255.255.0
ip helper-address 192.168.13.10
!
interface GigabitEthernet0/1.20
encapsulation dot1Q 20
ip address 192.168.20.1 255.255.255.0
ip helper-address 192.168.13.10
!

Office-router01 says:

interface GigabitEthernet0/0
no ip address
duplex auto
speed auto
!
interface GigabitEthernet0/0.20
encapsulation dot1Q 20
ip address 192.168.20.2 255.255.255.0
!
interface GigabitEthernet0/1
no ip address
duplex auto
speed auto
shutdown
!

All servers ping each other, for each DHCP vlan normally distributes the IP of its subnet. Everything works as it should.
There is Vlan 20. In it, all computers receive IP. They ping the server quietly. And servers ping them.
Router Office-router01 and srv-r0 only ping each other on vlan20.

BUT! Computers vlan11,12,13 cannot ping office-router which has IP 192.168.20.2/24
Here's what the trace says:

How to connect them?

Answer 1

Show sh ip rowith office-router01, andtracert 192.168.13.1

Answer 2

I'm trying to find a problem in the packet tracer itself