[BUG] Console errors when moving tokens w/o combatants in combat tracker

[VeilOfOblivion]

Describe the bug
Moving tokens when combat tracker is empty causes console errors

Environment Details
Foundry VTT Version: 0.7.7
Turn Marker Version: 2.6.9
All other modules deactivated
Happens in Chrome (86.0.4240.198) and Firefox (82.0.3)

To Reproduce
Move a token without having anyone in the combat tracker and check the console for errors

Expected behavior
No errors

Stack Trace
turnmarker.js:56 Uncaught (in promise) TypeError: Cannot read property 'token' of undefined
at turnmarker.js:56
at Function._call (foundry.js:2496)
at Function.call (foundry.js:2481)
at foundry.js:29906
at Array.reduce ()
at Scene.updateEmbeddedEntity (foundry.js:29893)
at TokenLayer.updateMany (foundry.js:12402)
at TokenLayer.moveMany (foundry.js:12344)
at KeyboardManager._handleMovement (foundry.js:3059)
at foundry.js:3028
(anonymous) @ turnmarker.js:56
_call @ foundry.js:2496
call @ foundry.js:2481
(anonymous) @ foundry.js:29906
updateEmbeddedEntity @ foundry.js:29893
updateMany @ foundry.js:12402
moveMany @ foundry.js:12344
_handleMovement @ foundry.js:3059
(anonymous) @ foundry.js:3028
setTimeout (async)
_onMovement @ foundry.js:3028
_handleKeys @ foundry.js:2805
_onKeyDown @ foundry.js:2760