Unable to load local directory on Mac OSX

[Chadius]

Environment: Mac OSX 15.1
Browser: Safari, Firefox, Chrome

When I click "Select Local Images" the app crashes.

Network tab says it's trying to make a POST call to "/select_directory", but the request is getting blocked on my end. I think this is a CORS issue where localhost will block other localhost calls.

The browser error looks like this:

    <anonymous> http://localhost:5000/:362
    (Async: promise callback)
    <anonymous> http://localhost:5000/:361

Here's my terminal output.

 * Serving Flask app 'app'
 * Debug mode: off
INFO:werkzeug:WARNING: This is a development server. Do not use it in a production deployment. Use a production WSGI server instead.
 * Running on http://127.0.0.1:5000
INFO:werkzeug:Press CTRL+C to quit
INFO:werkzeug:127.0.0.1 - - [12/Nov/2024 06:56:54] "GET / HTTP/1.1" 200 -
INFO:werkzeug:127.0.0.1 - - [12/Nov/2024 06:56:54] "GET /static/style.css HTTP/1.1" 200 -
INFO:werkzeug:127.0.0.1 - - [12/Nov/2024 06:56:54] "GET /static/click.mp3 HTTP/1.1" 206 -
INFO:werkzeug:127.0.0.1 - - [12/Nov/2024 06:56:54] "GET /get_images HTTP/1.1" 200 -
INFO:werkzeug:127.0.0.1 - - [12/Nov/2024 06:56:54] "GET /get_rankings HTTP/1.1" 200 -
INFO:werkzeug:127.0.0.1 - - [12/Nov/2024 06:56:54] "GET /serve_image?path=static/images/40e0ab70-0c75-4634-ab8f-1157699f3f8c.jpg HTTP/1.1" 200 -
INFO:werkzeug:127.0.0.1 - - [12/Nov/2024 06:56:54] "GET /serve_image?path=static/images/45e6ea01-257e-4ed0-95e9-7620eb360772.jpg HTTP/1.1" 200 -
INFO:werkzeug:127.0.0.1 - - [12/Nov/2024 06:56:54] "GET /get_current_directory HTTP/1.1" 200 -
INFO:werkzeug:127.0.0.1 - - [12/Nov/2024 06:56:54] "GET /favicon.ico HTTP/1.1" 404 -
*** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'NSWindow should only be instantiated on the main thread!'
*** First throw call stack:
(
	0   CoreFoundation                      0x000000018799cec0 __exceptionPreprocess + 176
	1   libobjc.A.dylib                     0x0000000187482cd8 objc_exception_throw + 88
	2   CoreFoundation                      0x00000001879c154c _CFBundleGetValueForInfoKey + 0
	3   AppKit                              0x000000018b47e6f4 -[NSWindow _initContent:styleMask:backing:defer:contentView:] + 260
	4   AppKit                              0x000000018b47e5e4 -[NSWindow initWithContentRect:styleMask:backing:defer:] + 48
	5   libtk8.6.dylib                      0x0000000102c71ba4 TkMacOSXMakeRealWindowExist + 564
	6   libtk8.6.dylib                      0x0000000102c717f0 TkWmMapWindow + 76
	7   libtk8.6.dylib                      0x0000000102bce588 MapFrame + 76
	8   libtcl8.6.dylib                     0x0000000102f9b1a0 TclServiceIdle + 88
	9   libtcl8.6.dylib                     0x0000000102f7b09c Tcl_DoOneEvent + 120
	10  libtk8.6.dylib                      0x0000000102c629c8 TkpInit + 800
	11  libtk8.6.dylib                      0x0000000102bc6f20 Initialize + 2500
	12  _tkinter.cpython-312-darwin.so      0x0000000101b2a1b8 Tcl_AppInit + 92
	13  _tkinter.cpython-312-darwin.so      0x0000000101b29e08 Tkapp_New + 668
	14  _tkinter.cpython-312-darwin.so      0x0000000101b29b68 _tkinter_create_impl + 268
	15  _tkinter.cpython-312-darwin.so      0x0000000101b297e8 _tkinter_create + 276
	16  python3.12                          0x00000001003e29ac cfunction_vectorcall_FASTCALL + 96
	17  python3.12                          0x00000001004eb670 _PyEval_EvalFrameDefault + 221860
	18  python3.12                          0x00000001004125f0 slot_tp_init + 328
	19  python3.12                          0x0000000100406858 type_call + 148
	20  python3.12                          0x00000001004eba10 _PyEval_EvalFrameDefault + 222788
	21  python3.12                          0x000000010037f900 method_vectorcall + 368
	22  python3.12                          0x00000001005f7944 thread_run + 156
	23  python3.12                          0x0000000100577cfc pythread_wrapper + 48
	24  libsystem_pthread.dylib             0x00000001878432e4 _pthread_start + 136
	25  libsystem_pthread.dylib             0x000000018783e0fc thread_start + 8
)
libc++abi: terminating due to uncaught exception of type NSException
[1]    87579 abort      python app.py

I feel the solution is to configure the call to select_directory so it passes CORS restrictions but I'm not completely sure on how to do that.

[QuentinWach]

I can't debug or test this right now but I was aware that there might be issues with the threading. I hope to get a Mac this week and will then see what I can do. Thank you for letting me know, @Chadius.

[Chadius]

Thanks for taking a look. I double checked and it does work on WIndows Firefox. I'm usually on my Macbook. The interface is really nice.

[QuentinWach]

It should indeed work well on Windows as I programmed on Windows up until now. But I now have a Mac again as well and got the same error. WIP.

[QuentinWach]

@Chadius - I can't seem to find the time right now to thoroughly test the new version I wrote that seems to be a fix to this issue. But I encourage you and anyone having this issue with Image Ranker on MacOS to try out the branch MacOS Test Branch.

[Chadius]

Thanks for the update. This is working for me in Firefox, Chrome and Safari. Thank you for looking into this!