Crashed browser when use this code about morris.js HOT 3 OPEN

Just like me, it crashed when using Morris Line and Area. I implement this morris code using Promise and await inside a dynamic page that has different scripts that are loaded each page. It will be crashed if using await to load the script, and it was okay if does not use await to load the script. And the script that I mean is not the library, but the script to initialize the charts.
I test it with 5 examples morris charts: Morris Donut, Bar, BarStacked, Line, and Area. I also have another example using jQuery Flot and jQuery Sparkline in that sample script and still okay without Morris LIne and Area in await mode.

Library version: morris.js v0.5.0, jquery.js v2.1.0;
Browser version: Firefox ESR v60.7.2esr (64-bit);

from morris.js.

Hello, it would be great if you could provide any log that appears in the console.

from morris.js.

Actually, your values in item1 are not numeric. These should be numeric otherwise it is normal they cannot be shown on the Y-axis.

from morris.js.