mixins with includes not working

[Creativenauts]

Not sure what I'm doing wrong here but I have created mixins file with a couple of mixins that I have created for my project. I keep getting the following errors in console.

pug_mixins.job-card is not a function
pug_mixins.btn is not a function

Mixins file:

mixin job-card(url, title, description, date, location, type, category)

	a(href=url)

		.job-listings-body
			h5 #{title || 'Physical Therapist / Clinic Director'}

			p #{description || 'In this position the physical therapy assistant will provide physical therapy in a team environment, and under the direction and supervision of the staff physical therapist in a skilled nursing facility.'}
			
			.related-jobs-meta
				span #[i.fa.fa-calendar] #{date || '1 Day Ago'}
				span #[i.fa.fa-map-marker] #{location || 'Southern Pines, NC 28387'}
				span #[i.fa.fa-clock-o] #{type || 'Full Time'}
				span #[i.fa.fa-tag] #{category || 'Nursing'}

		.lob-listing-apply-btn #[i.fa.fa-check-circle] Apply Online!

mixin btn(url, text, type)
	- var btnType = type;

	if btnType === 'button'
		button(type="button")&attributes(attributes)= text
	else
		a(href=url)&attributes(attributes)= text

Example Include File in template:

+btn('#', 'test', 'button')

Page Template:

include mixins.pug
- var pageTitle = 'Job Details Page'

doctype html
html(lang="en")
	head
		include regions/head.pug

	body

		// Toolbar
		include menus/toolbar.pug

		// Header
		section.job-header

			.container
				p We've Got This Great Job For You!
				h1 Physical Therapist - Skilled Nursing / Cynthiana, KY

		// Sub Header
		section.job-sub-header

			.container

				.related-jobs-meta
					span #[i.fa.fa-calendar] 3 Days Ago
					span #[i.fa.fa-map-marker] Southern Pines, NC 28387
					span #[i.fa.fa-clock-o] Full Time

		// Main Content
		section.main-content

			// Sidebar
			.col-desktop-5

				// Form
				include components/job-form.pug

				// Review Carousel
				include components/testimonial-carousel.pug

				// Related Jobs
				include components/sidebar-related-jobs.pug

	// footer
	include regions/footer.pug

[ForbesLindesay]

Please submit a failing test case. See #2687 for an example of how to do this.