Kubernetes Nginx Ingress phpmyadmin 502 error - kubernetes

Question

I am trying to solve quite an annoying problem I encounter when using Kubernetes. When I am trying to reach PHPMyAdmin on my server, it returns an Nginx 502 Bad Gateway error.
My structure in my cluster is as follows. I use an Nginx ingress LoadBalancer on DigitalOcean to get traffic into my cluster. It then passes my ingress (in the first code block), which splits the traffic across the subdomains.
When traffic goes to the phpmyadmin subdomain, the request is passed to the 'phpmyadmin-service' with service port 8085.
apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
name: nginx-ingress
annotations:
kubernetes.io/ingress.class: nginx
ingress.kubernetes.io/rewrite-target: /
spec:
rules:
- host: "app1.example.com"
http:
paths:
- path: /
backend:
serviceName: app1-service
servicePort: 80
- host: "phpmyadmin.example.com"
http:
paths:
- path: /
backend:
serviceName: phpmyadmin-service
servicePort: 8085
Then, the service receives the request, and passes it to the 'phpmyadmin-deployment' deployment. This is a deployment that runs the phpmyadmin/phpmyadmin:fpm docker image.
apiVersion: apps/v1
kind: Deployment
metadata:
creationTimestamp: null
name: phpmyadmin-deployment
labels:
app: phpmyadmin
spec:
selector:
matchLabels:
app: phpmyadmin
template:
metadata:
creationTimestamp: null
labels:
app: phpmyadmin
spec:
containers:
- name: phpmyadmin
image: phpmyadmin/phpmyadmin:fpm
ports:
- containerPort: 8087
env:
- name: PMA_ABSOLUTE_URI
value: 'phpmyadmin.example.com'
- name: PMA_HOST
value: mysql
- name: PMA_PORT
value: "3306"
- name: MYSQL_ROOT_PASSWORD
valueFrom:
secretKeyRef:
name: mysql-secrets
key: rootpw
---
apiVersion: v1
kind: Service
metadata:
name: phpmyadmin-service
spec:
type: ClusterIP
selector:
app: phpmyadmin
ports:
- port: 8085
targetPort: 8087
So something is giving me the 502 Bad Gateway error, and I don't know what it is. Thanks in advance for replying!