include is not a function

[mrranger]

"ejs": "^3.1.10",
"express": "^4.21.0",

index.js

const express = require('express');
const flash = require('connect-flash');
const session = require('express-session');
const passport = require('passport');
const fileUpload = require('express-fileupload');
const config = require('./config/config.json');
const path = require('path');

const app = express();
const http = require('http').Server(app);
const io = require('socket.io')(http);

const port = config.port;


app.use(express.static('./public'));
app.use(express.static('./themes'));
app.set('view engine', 'ejs');
app.set('views', path.join(__dirname, 'views'));
app.use(express.urlencoded({ extended: true, limit: '5mb' }));
app.use(express.json());
app.use(fileUpload());

In login.ejs
<%- include('../partials/header.ejs') %>

everything works fine
views/login/login.ejs

When I try to do the same in views/app/dashboard.ejs
views/app/dashboard.ejs

<%- include('../partials/header.ejs') %>

I get an error

TypeError: C:\Users\range\Documents\GitHub\FAMQGTA\views\app\dashboard.ejs:77
75|
76|

77| <%- include('../partials/header.ejs') %>
78|
79|
80|

include is not a function

[mde]

Without having the entirety of your application code, it is impossible to debug an issue like this. Also, given the millions of installations EJS has every week, it is very unlikely the problem is in EJS itself. Debugging application code that uses EJS is beyond the scope of our project. If you can provide us a minimal test that demonstrates a bug in EJS itself, we're happy to take a look.