Card throws exception "Cannot read property 'includes' of null"

Checklist:

[ x] I updated to the latest version available
[ x] I cleared the cache of my browser

Release with the issue:

1.3.0

Last working release (if known):

Browser and Operating System:

I am using Chrome and Windows, but should not matter

Description of problem:

There is an exception flickering all the time, because the "template" parameter for the _evaluateTemplate function is either null or an object with the property "entity"(like this: {entity: ""})

Javascript errors shown in the web inspector (if applicable):

5VM33232 config-template-card.js:3372 Uncaught (in promise) TypeError: Cannot read property 'includes' of null
    at HTMLElement._evaluateTemplate (VM33232 config-template-card.js:3372)
    at VM33232 config-template-card.js:3294
    at Array.forEach (<anonymous>)
    at HTMLElement.shouldUpdate (VM33232 config-template-card.js:3290)
    at HTMLElement.performUpdate (VM33232 config-template-card.js:2414)
    at HTMLElement._enqueueUpdate (VM33232 config-template-card.js:2369)

Additional information:

The null check at this location is rather simple, but I am not sure if the object should go through the rest of the function or not. I am guessing not?

        if (!template || !template.includes || !template.includes('${')) {
            return template;
        }

iantrich / config-template-card

Card throws exception "Cannot read property 'includes' of null" #67