Uncaught TypeError: Cannot read properties of undefined (reading 'shift')

[sionirvine]

Before you open an issue:

• I followed the installation or update guide
• I read the troubleshooting guide in the wiki

Affected Version(s): 1.7.3

PHP Version: 7.4.3 FPM

Webserver: Nginx

Browser: Microsoft Edge Version 96.0.1054.29

Installation Type

• Wordpress x.y.z
• Mediawiki x.y.z
• Standalone

Description
using the javascript tracker, it works fine, but my browser logged an error on the console:

Uncaught TypeError: Cannot read properties of undefined (reading 'shift')
at OWA.commandQueue.process (owa.tracker-combined-min.js:formatted:1468)
at owa.tracker-combined-min.js:formatted:2955
at owa.tracker-combined-min.js:formatted:2958

How to reproduce
fresh install of Open Web Analytics 1.7.3, use the owa.tracker-combined manually for my page.

<script type="text/javascript" src="https://*****.com/modules/base/js/owa.tracker-combined-min.js"></script>

the script loaded just fine.

Possible Solution
upon further inspection, it generates an error from this line (from owa.tracker-combined):

this.push(this.asyncCmds.shift(), callback);

from my knowledge, apparently it generates an error because the variable asyncCmds is an empty array, so it has nothing to shift.
so maybe add an empty array check first? hope it helps.

Additional context
None