Numbers, Pages, Keynote quit unexpectedly even in Safe Mode. What to do?

All my iWork software suddenly started to crash. I cannot open any documents, nor start new documents. I have tried to boot in safe mode, but the problem remains the same.

I have no idea how to resolve this. Any ideas will be much appreciated.

Cheers,

Jonas

Here is the report I got from the last crash:

Process: Numbers [777]

Path: /Applications/Numbers.app/Contents/MacOS/Numbers

Identifier: com.apple.iWork.Numbers

Version: 11.1 (7031.0.102)

Build Info: Numbers-7031000102000000~2 (1A104)

App Item ID: 409203825

App External ID: 842170571

Code Type: ARM-64 (Native)

Parent Process: ??? [1]

Responsible: Numbers [777]

User ID: 501

Date/Time: 2021-06-11 11:21:31.043 +0200

OS Version: macOS 11.1 (20C69)

Report Version: 12

Anonymous UUID: 28B234B7-F50B-8585-C9FE-330563E02730

Time Awake Since Boot: 110 seconds

System Integrity Protection: enabled

Crashed Thread: 9 Dispatch queue: com.apple.CoreText.fontdescriptorMatching

Exception Type: EXC_BREAKPOINT (SIGTRAP)

Exception Codes: EXC_ARM_BREAKPOINT at 0x000000018ce6dd10 (brk 1)

Exception Note: EXC_CORPSE_NOTIFY

Termination Signal: Trace/BPT trap: 5

Termination Reason: Namespace SIGNAL, Code 0x5

Terminating Process: exc handler [777]