Model refusing to insert data

After checking out the source code for CodeIgniter\Model, it would seem there's an unimplemented method possibly interrupting code execution, and any error this causes isn't being handled properly and thus fails silently. That's my best guess at least. https://ibb.co/ZTBscWt

Which version of CodeIgniter 4 are you using? I use 4.0.4 and the code you are showing in that image is at row 760 in my case, not at 715.

I am also using 4.0.4. I'll run composer update and see if anything changes.

edit: partial output from composer update

Code:

Updating dependencies
Nothing to modify in lock file
Installing dependencies from lock file (including require-dev)
Nothing to install, update or remove

*shrug*