Deprecated function: Passing null to str_starts_with() in MaterialIcons->getFontFamilyClass()

abhishek_gupta1 → made their first commit to this issue’s fork.

@cmah, I have fixed the issue and created MR, please review it once.

I am working on the same project as @cmah.

On our site, the font family is saved as an empty string in the database:

mysql>  SELECT entity_id, field_hwp_icon_icon, field_hwp_icon_family, field_hwp_icon_classes FROM paragraph__field_hwp_icon;
+-----------+---------------------+-----------------------+------------------------+
| entity_id | field_hwp_icon_icon | field_hwp_icon_family | field_hwp_icon_classes |
+-----------+---------------------+-----------------------+------------------------+
|         4 | cabin               |                       | NULL                   |
|         6 | 30fps               |                       | NULL                   |
|         7 | phone_android       |                       | NULL                   |
+-----------+---------------------+-----------------------+------------------------+
3 rows in set (0.00 sec)

I am not sure why that is. We are using the paragraphs and paragraphs_layout modules, and some custom code. But this did not cause problems with Version 2.0.1, so I consider it a bug in this module. (Perhaps it is a bug that is only exposed when there are bugs in other parts of the system.)

I am updating the "Steps to reproduce" in the issue summary.