Using DHCP Server in Simple Network #1

To test my DHCP server, I have created a basic network with 2 switches, an access point, and the server.

I've used Packet Tracer to show what the network I've created looks like.

The server is currently connected to S1 via a layer 3 connection, the rest is layer 2.

After setting up all the parts, I have been able to connection to the wireless connections but been unable to gain an address via DHCP. I started debugging and received the following prompt on S1, the layer 3 switch.