EventSource's response has a MIME type ("text/html") that is not "text/event-stream". Aborting the connection

I’m trying to setup n8n in a subdomain via a reverse proxy in cloudflare, all went well until I accessed to the dashboard. I’m having this error on the console:

EventSource’s response has a MIME type (“text/html”) that is not “text/event-stream”. Aborting the connection.

This is my config:

node_version: 14.17.3
version: N/A
unique_id: [unique_id]
PM2_HOME: /root/.pm2
NVM_RC_VERSION:
N8N_BASIC_AUTH_USER: [user]
XDG_SESSION_ID: 18634575
HOSTNAME: instantvoices
NVM_CD_FLAGS:
TERM: xterm
SHELL: /bin/bash
HISTSIZE: 1000
SSH_CLIENT: 187.189.165.227 1062 22
N8N_BASIC_AUTH_PASSWORD: [password]
SSH_TTY: /dev/pts/1
NVM_DIR: /root/.nvm
USER: root
LS_COLORS: rs=0:di=01;34:ln=01;36:mh=00:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:mi=01;05;37;41:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;42:st=37;44:ex=01;32:*.tar=01;31:*.tgz=01;31:*.arc=01;31:*.arj=01;31:*.taz=01;31:*.lha=01;31:*.lz4=01;31:*.lzh=01;31:*.lzma=01;31:*.tlz=01;31:*.txz=01;31:*.tzo=01;31:*.t7z=01;31:*.zip=01;31:*.z=01;31:*.Z=01;31:*.dz=01;31:*.gz=01;31:*.lrz=01;31:*.lz=01;31:*.lzo=01;31:*.xz=01;31:*.bz2=01;31:*.bz=01;31:*.tbz=01;31:*.tbz2=01;31:*.tz=01;31:*.deb=01;31:*.rpm=01;31:*.jar=01;31:*.war=01;31:*.ear=01;31:*.sar=01;31:*.rar=01;31:*.alz=01;31:*.ace=01;31:*.zoo=01;31:*.cpio=01;31:*.7z=01;31:*.rz=01;31:*.cab=01;31:*.jpg=01;35:*.jpeg=01;35:*.gif=01;35:*.bmp=01;35:*.pbm=01;35:*.pgm=01;35:*.ppm=01;35:*.tga=01;35:*.xbm=01;35:*.xpm=01;35:*.tif=01;35:*.tiff=01;35:*.png=01;35:*.svg=01;35:*.svgz=01;35:*.mng=01;35:*.pcx=01;35:*.mov=01;35:*.mpg=01;35:*.mpeg=01;35:*.m2v=01;35:*.mkv=01;35:*.webm=01;35:*.ogm=01;35:*.mp4=01;35:*.m4v=01;35:*.mp4v=01;35:*.vob=01;35:*.qt=01;35:*.nuv=01;35:*.wmv=01;35:*.asf=01;35:*.rm=01;35:*.rmvb=01;35:*.flc=01;35:*.avi=01;35:*.fli=01;35:*.flv=01;35:*.gl=01;35:*.dl=01;35:*.xcf=01;35:*.xwd=01;35:*.yuv=01;35:*.cgm=01;35:*.emf=01;35:*.axv=01;35:*.anx=01;35:*.ogv=01;35:*.ogx=01;35:*.aac=01;36:*.au=01;36:*.flac=01;36:*.mid=01;36:*.midi=01;36:*.mka=01;36:*.mp3=01;36:*.mpc=01;36:*.ogg=01;36:*.ra=01;36:*.wav=01;36:*.axa=01;36:*.oga=01;36:*.spx=01;36:*.xspf=01;36:
MAIL: /var/spool/mail/root
PATH: /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin
PWD: /root
N8N_HOST: n8n.[host server]
HISTCONTROL: ignoredups
SHLVL: 1
HOME: /root
LOGNAME: root
SSH_CONNECTION: 187.189.165.227 1062 45.132.242.140 22
LESSOPEN: ||/usr/bin/lesspipe.sh %s
N8N_BASIC_AUTH_ACTIVE: true
XDG_RUNTIME_DIR: /run/user/0
_: /usr/local/bin/pm2
PM2_USAGE: CLI
NODE_APP_INSTANCE: 0
vizion_running: false
km_link: false
namespace: default

If I modify my reverse proxy config. I get these errors:

app.9290f259.js:1 There was a problem loading the node-parameters of node: "Start"
(anonymous) @ app.9290f259.js:1
app.9290f259.js:1 TypeError: e is not iterable
    at l (chunk-vendors.5be847d4.js:78)
    at Object.c [as getNodeParameters] (chunk-vendors.5be847d4.js:78)
    at app.9290f259.js:1
    at Array.forEach (<anonymous>)
    at s.addNodes (app.9290f259.js:1)
    at async s.newWorkflow (app.9290f259.js:1)
    at async s.initView (app.9290f259.js:1)
    at async app.9290f259.js:1

Hey @sirland,

Are you using PM2 for deployment or Docker?

Btw. I just checked locally for me the /push endpoint sends the data as:
Content-Type: text/event-stream;charset=UTF-8

So whatever you have in front of n8n does seem to mess something up.

Hi, @harshil1712 I’m using pm2 for the deployment and using Portzilla in Cloudflare for the reverse proxy.

@jan the “text/event-stream” error seems to be resolved if I deactivate the one-page app compatibility con Portzilla, but I get the “There was a problem loading the node-parameters of node ‘Start’” error *. I don’t know if there is something I’m missing from the n8n configuration. The tunnel from n8n cloud seems to be working fine, but I want to use my own domain since I’m using n8n on production.

app.9290f259.js:1 There was a problem loading the node-parameters of node: "Start"
(anonymous) @ app.9290f259.js:1
app.9290f259.js:1 TypeError: e is not iterable
    at l (chunk-vendors.5be847d4.js:78)
    at Object.c [as getNodeParameters] (chunk-vendors.5be847d4.js:78)
    at app.9290f259.js:1
    at Array.forEach (<anonymous>)
    at s.addNodes (app.9290f259.js:1)
    at async s.newWorkflow (app.9290f259.js:1)
    at async s.initView (app.9290f259.js:1)
    at async app.9290f259.js:1

Hey @sirland,

I recently wrote a blog post on How to set up n8n via PM2, which also covers how to configure a reverse proxy (Nginx) and point your instance to a domain. Maybe this might be useful for you: How to set up n8n via PM2 ⚙️

Thank you very much @harshil1712 I’ll try your guide and tell you how it went.

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