Why does this image now show up despite some flawless code?

Here's how the resource looks in Compass...


So, it's getting stored in the database correctly. Here's what the React code looks like:

import React, { Component } from 'react';

import Image from '../../../components/Image/Image';
import './SinglePost.css';

class SinglePost extends Component {
  state = {
    title: '',
    author: '',
    date: '',
    image: '',
    content: ''
  };

  componentDidMount() {
    const postId = this.props.match.params.postId;
	if(postId) {
		fetch('http://localhost:8080/feed/post/' + postId, {
			headers: {
			Authorization: 'Bearer ' + this.props.token
			}
		})
		  .then(res => {
			if (res.status !== 200) {
			  throw new Error('Failed to fetch status');
			}
			return res.json();
		  })
		  .then(resData => {
			this.setState({
			  title: resData.post.title,
			  author: resData.post.creator.name,
			  image: 'http://localhost:8080/' + resData.post.imageUrl,
			  date: new Date(resData.post.createdAt).toLocaleDateString('en-US'),
			  content: resData.post.content
			});
		  })
		  .catch(err => {
			console.log(err);
		});
	}
  }

  render() {
    return (
      <section className="single-post">
        <h1>{this.state.title}</h1>
        <h2>
          Created by {this.state.author} on {this.state.date}
        </h2>
        <div className="single-post__image">
          <Image contain imageUrl={this.state.image} />
        </div>
        <p>{this.state.content}</p>
      </section>
    );
  }
}

export default SinglePost;

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Here's what it looks like when you inspect that big, honking blank where the image should be displayed:

[code]<div class="image" style="background-image: url(&quot;http://localhost:8080/imagesmuscular.PNG&quot;); background-size: contain; background-position: center center;"></div>[code]

Why does the image get rendered as "imagesmuscular.PNG" as opposed to "image/muscular.PNG?"

Any ideas?