Segmentation fault on using the max Eloquent function

I am calling my Model within Artisan Tinker to get the max stock_id. Within Tinker, I keep getting seg faults.

>>> $blah = new App\StockTwits;
=> <App\StockTwits #000000007beee62900000001069541f8> {}
>>> $blah::where('symbol', 'AAPL')->max('stock_id');
Segmentation fault: 11

What's interesting is, if I use ->min or ->count, I get the results just fine.