HTML Slideshow – Images not showing

My slideshow is not working (HTML, CSS, JS). This is how it looks my code right now:

HTML

<div class="slideshow-container">
<div class="mySlides fade">
<div class="numbertext">1 / 3</div>

<div class="text">Nuestra cafetería</div>
</div>

          <div class="mySlides fade">
            <div class="numbertext">2 / 3</div>
            <img src="imgMocha-Lounge.jpg" style="width:100%">
            <div class="text">Nuestra cafetería</div>
            </div>
        
          <div class="mySlides fade">
            <div class="numbertext">3 / 3</div>
            <img src="imgmochagirl.jpg" style="width:100%">
            <div class="text">Nuestra cafetería</div>    
            </div>

            <a class="prev" onclick="plusSlides(-1)">&#10094;</a>
            <a class="next" onclick="plusSlides(1)">&#10095;</a>
            </div>
            <br>

            <div style="text-align:center">
                <span class="dot"></span> 
                <span class="dot"></span> 
                <span class="dot"></span> 
            </div>`

CSS

* {box-sizing: border-box}

.mySlides {
display:none;
}

img {vertical-align: middle;}

.slideshow-container {
max-width: 1000px;
position: relative;
margin: auto;
height: 300px;
margin-top: 10px;

}

.prev, .next {
cursor: pointer;
position: absolute;
top: 50%;
width: auto;
margin-top: -22px;
padding: 16px;
color: white;
font-weight: bold;
font-size: 18px;
transition: 0.6s ease;
border-radius: 0 3px 3px 0;
user-select: none;
}

.next {
right: 0;
border-radius: 3px 0 0 3px;
}

.prev:hover, .next:hover {
background-color: rgba(0,0,0,0.8);
}

.text {
color: #f2f2f2;
font-size: 15px;
padding: 8px 12px;
position: absolute;
bottom: 8px;
width: 100%;
text-align: center;
}

.numbertext {
color: #f2f2f2;
font-size: 12px;
padding: 8px 12px;
position: absolute;
top: 0;
}

.dot {
height: 15px;
width: 15px;
margin: 0 2px;
background-color: #bbb;
border-radius: 50%;
display: inline-block;
transition: background-color 0.6s ease;
}

.active, .dot:hover {
background-color: #717171;
}

.fade {
animation-name: fade;
animation-duration: 1.5s;
}

@keyframes fade {
from {opacity: .4}
to {opacity: 1}
}

@media only screen and (max-width: 300px) {
.prev, .next,.text {font-size: 11px}
}

JS
let slideIndex = 0;
showSlides();

function showSlides() {
let i;
let slides = document.getElementsByClassName("mySlides");
for (i = 0; i < slides.length; i++) {
slides[i].style.display = "none";
}

slideIndex++;

if (slideIndex > slides.length) {slideIndex = 1}
slides[slideIndex-1].style.display = "block";
setTimeout(showSlides, 2000);

I’m trying to make a slideshow