when i try to load a project my computer kernel panics

Video card drivers or card doesn't support OpenGL ES 3.0 maybe Some details on hardware and os might be useful ;)

Kernel Panic Logs Once your Mac restarts after a kernel panic, the panic text is added to the log files your Mac keeps. You can use the Console app (located at /Applications/Utility) to view the crash logs.

Launch Console. In the Consile app sidebar, select the folder named Library/Logs. Select the DiagnosticsReporter folder. A list of reports will be displayed. Select the most recent crash report to view. You can also view the diagnostics report directly by viewing the log file located at: /Library/Logs/DiagnosticsReports You can also check the CrashReporter folder in Console for any recent log entries. Look through the report for a time corresponding to when the kernel panic occurred. With any luck it will provide a clue as to what events were taking place immediately before the panic was declared.

On my 21.5 in late 2014 iMac under macOS 10.14.5, everything is fine. On my grandkid's recently purchased June 2017 MacBook Air (macOS 10.14.5), Godot kernel panics every single time as soon as I attempt to access the assets library. In the System Prefs, I downgraded the support from OpenGL 3 to 2, but the same thing happens. I haven't checked the console logs, but I will when I get my hands on that machine again. IMNSHO, it is OK if an app crashes: it is the developer's sole responsibility. But crashing the system is an absolute NONO. Please, Godot, clean up your act.

While making an angry forum post might make you feel a bit better and is certainly better than never mentioning the issue at all, the best thing you can do is report it to the tracker. And as @NigeC said above, check the crash logs for what actually happened. Nobody will be able to figure this out and fix it without that information.

The tracker is here: https://github.com/godotengine/godot/issues