Hello, I'm currently a new student in packet tracer and i believe I've done all the necessary configurations needed for the network design attached below.

I've done Vlan, IP configuration, IP DHCP excluded and router rip. But i can't seem to make the connection between the server0 and router 3 green and i can't ping any PC here. also it seems that when i try to ping certain PCs, it would say that it has no functional ports. Please help as i can't identify the problem nor know how to fix it. I've included the packet tracer file and the subnet table i've made in this post as a zip file. any help or direct edit to the file to fix the problem would be a great help and greatly appreciated.