I'm running into the same issue. I used a terminal command to specifically turn off all extensions so I can't figure it out. Even an OS reinstall from Recovery did nothing! I'm also getting a crash like this: Path:									/Applications/Safari.app/Contents/MacOS/Safari Identifier:						com.apple.Safari Version:							 14.0 (16610.1.21.1.2) Build Info:						WebBrowser-7610001021001002~4 Code Type:						 X86-64 (Native) Parent Process:				??? [1] Responsible:					 Safari [4047] User ID:							 501 Date/Time:						 2020-08-03 00:00:45.653 -0400 OS Version:						Mac OS X 10.16 (20A5323l) Report Version:				12 Bridge OS Version:		 5.0 (18P50335d) Anonymous UUID:				EE725C0E-757E-37B3-A976-960FE7BC3383 Sleep/Wake UUID:			 B2937BBD-FDAF-4CE5-BD90-077299A51AB7 Time Awake Since Boot: 21000 seconds Time Since Wake:			 10000 seconds System Integrity Protection: enabled Crashed Thread:				0	Dispatch queue: com.apple.main-thread Exception Type:				EXC_BAD_INSTRUCTION (SIGILL) Exception Codes:			 0x0000000000000001, 0x0000000000000000 Exception Note:				EXC_CORPSE_NOTIFY Termination Signal:		Illegal instruction: 4 Termination Reason:		Namespace SIGNAL, Code 0x4 Terminating Process:	 exc handler [4047] Application Specific Information: Crashing on exception: Invalid parameter not satisfying: image != nil