Fatal error: Uncaught Error: Using $this when not in object context in /volume1/web/projects/spaceticker.app.src/panels/cms/010_events/controls.tpl.php on line 2

Error: Using $this when not in object context in /volume1/web/projects/spaceticker.app.src/panels/cms/010_events/controls.tpl.php on line 2

Call Stack:
    0.0001     359904   1. {main}() /volume1/web/projects/spaceticker.app.src/panels/cms/010_events/controls.tpl.php:0