Photos keeps crashing -Crashed Thread: 1 Dispatch queue: Search Index Version Save Queue - help?

Hi, On my wife MacBook Pro, Photos will open for about 30 secs to 1 min, then crash with this report;

I have done a complete new install and then tried to turn on iCloud to start the sync and it happens again and again. Photos works fine on her iPad, iPhone and in the web browser, just not on the Mac... Any ideas?

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Process:              Photos [8531]

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

Identifier:           com.apple.Photos

Version:              4.0 (3451.7.120)

Build Info:           PhotoApp-3451007120000000~2

Code Type:            X86-64 (Native)

Parent Process:       ??? [1]

Responsible:          Photos [8531]

User ID:              501

Date/Time:            2019-06-21 20:57:31.856 +0200

OS Version:           Mac OS X 10.14.5 (18F132)

Report Version:       12

Bridge OS Version:    3.0 (14Y901)

Anonymous UUID:       051218A1-7C92-6412-35FE-E4318A1B9548

Sleep/Wake UUID:      FFF55A51-5F50-4E7D-8FDD-6B7941F19FDA

Time Awake Since Boot: 7600 seconds

Time Since Wake:      96 seconds

System Integrity Protection: enabled

Crashed Thread:       1 Dispatch queue: Search Index Version Save Queue

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 [8531]

Application Specific Backtrace 1:

0  CoreFoundation                     0x00007fff2d37acfd __exceptionPreprocess + 256

1  libobjc.A.dylib                    0x00007fff57a20a17 objc_exception_throw + 48

2  CoreFoundation                     0x00007fff2d37ab2f +[NSException raise:format:] + 201

3  PhotoLibraryPrivate                0x00007fff4ee25cdd -[LiSqliteBuffer setData:forRow:forColumn:] + 133

4  PhotoLibraryPrivate                0x00007fff4edeca2e -[LiSqliteBuffer setObject:forRow:forColumn:] + 575

5  CoreFoundation                     0x00007fff2d312a0b -[__NSArrayM enumerateObjectsWithOptions:usingBlock:] + 219

6  PhotoLibraryPrivate                0x00007fff4edebf58 -[LiSqliteBufferWriter addRowFromArray:] + 273

7  PhotoLibraryPrivate                0x00007fff4f0b110b -[LiTransactionContext saveRequestFromContextData:saveHandlers:persistHandlers:] + 3573

8  PhotoLibraryPrivate                0x00007fff4f0b247b -[LiTransactionContext saveWithCompletionHandler:] + 460

9  PhotoLibraryPrivate                0x00007fff4f0af140 -[LiTransactionContext performChanges:completionHandler:] + 160

10 PhotoLibraryPrivate                0x00007fff4f06e310 __47-[RDVersionSearchIndexUpdateBatch finishUpdate]_block_invoke + 199

11 libdispatch.dylib                  0x00007fff591a05f8 _dispatch_call_block_and_release + 12

12 libdispatch.dylib                  0x00007fff591a163d _dispatch_client_callout + 8

13 libdispatch.dylib                  0x00007fff591a78e0 _dispatch_lane_serial_drain + 602

14 libdispatch.dylib                  0x00007fff591a83c6 _dispatch_lane_invoke + 433

15 libdispatch.dylib                  0x00007fff591b06ed _dispatch_workloop_worker_thread + 598

16 libsystem_pthread.dylib            0x00007fff593e1611 _pthread_wqthread + 421

17 libsystem_pthread.dylib            0x00007fff593e13fd start_wqthread + 13