Cover photo upload not working

I get the green bar but it just hangs. Inspector gives:
SyntaxError: Unexpected token < in JSON at position 178
at JSON.parse (<anonymous>)
at Function.n.parseJSON (jquery.js:4)
at Function.a.parseJSON (jquery-migrate.min.js:2)
at Object.onSuccess (um.min.js:1)
at Object.success (um.min.js:4)
at Object.t.success (um.min.js:4)
at i (jquery.js:2)
at Object.fireWith [as resolveWith] (jquery.js:2)
at y (jquery.js:4)
at XMLHttpRequest.c (jquery.js:4) “[“http:\/\/www.mpba.org.uk\/wp-content\/uploads\/ultimatemember\/temp\/0Zh1jspaKtXwc6u…56HVS9BWc\/stream_photo_7c5c08f83ce81e64d7344265332925bf_58ff3bc588eb3.jpg”]<style scoped>
#UsageDD {
position: relative;
z-index: 9999998;
height: 24px;
line-height: 24px;
background-color: #ddd;
color: #000;
font-family: Arial,Helvetica,sans-serif;
font-size: 13px;
text-align: center;
}
</style><div id=”UsageDD”><span>Queries:29<span style=”margin-left:12px”></span>Time:11.794<span style=”margin-left:12px”></span>Memory:53.47 MB</span></div>”