<div class="project-settings-dialog modal">
    <div class="modal-header">
        <h1 class="dialog-title">{{title}}</h1>
    </div>
    <div class="modal-body">
        <div class="field-container">
            <label>
                {{PROJECT_SETTING_BASE_URL}}: <input type="text" placeholder="{{PROJECT_SETTING_BASE_URL_HINT}}" value="{{baseUrl}}" class="url" />
            </label>
            {{#errorMessage}}<div class="alert" style="margin-bottom: 0">{{{errorMessage}}}</div>{{/errorMessage}}
         </div>
    </div>
    <div class="modal-footer">
        <button class="dialog-button btn" data-button-id="cancel">{{CANCEL}}</button>
        <button class="dialog-button btn primary" data-button-id="ok">{{OK}}</button>
    </div>
</div>

<div class="project-settings-dialog modal">
    <div class="modal-header">
        <h1 class="dialog-title">{{title}}</h1>
    </div>
    <div class="modal-body">
        <div class="field-container">
            <label>
                {{PROJECT_SETTING_BASE_URL}}: <input type="text" placeholder="{{PROJECT_SETTING_BASE_URL_HINT}}" value="{{baseUrl}}" class="url" />
            </label>
            {{#errorMessage}}<div class="alert" style="margin-bottom: 0">{{errorMessage}}</div>{{/errorMessage}}
         </div>
    </div>
    <div class="modal-footer">
        <button class="dialog-button btn" data-button-id="cancel">{{CANCEL}}</button>
        <button class="dialog-button btn primary" data-button-id="ok">{{OK}}</button>
    </div>
</div>

Use 2 curly braces instead of 3 for the error message
Use 2 curly braces instead of 3 for the error message
