EVOLUTION-MANAGER

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<head>
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<title>Mattermost</title>

<link rel='stylesheet' class='code_theme'>
    <style>
        .error-screen {
            font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
            padding-top: 50px;
            max-width: 750px;
            font-size: 14px;
            color: #333333;
            margin: auto;
            display: none;
            line-height: 1.5;
        }

.error-screen h2 {
            font-size: 30px;
            font-weight: normal;
            line-height: 1.2;
        }

.error-screen ul {
            padding-left: 15px;
            line-height: 1.7;
            margin-top: 0;
            margin-bottom: 10px;
        }

.error-screen hr {
            color: #ddd;
            margin-top: 20px;
            margin-bottom: 20px;
            border: 0;
            border-top: 1px solid #eee;
        }

.error-screen-visible {
            display: block;
        }
    </style>
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<body class='font--open_sans enable-animations'>
    <div id='root'>
        <div class='error-screen'>
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        <div
            class='loading-screen'
            style='position: relative'
        >
            <div class='loading__content'>
                <div class='round round-1'></div>
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</html>