LR Classic 15.0.1: Hang exporting photos in a project

I'm exporting photos from a project. If I pick a single photo and export, it works. If I try to export all of them (> 100), it hangs forever with the exporting progress bar at 100%.

I ran it from terminal and got the following log. Feel free to contact me, the issue is easily reproducible and I'm unable to export this project now, which is a critical thing I need to be able to do.

2025-11-14 14:10:15.761 Adobe Lightroom Classic[31377:3921868] ?:0: attempt to index a nil value
    0: method   metadataForExport              - 1344055025:468+16
    1:          [unnamed]                      - 508560402:484+83
    2:          [unnamed]                      - tail
    3:          [unnamed]                      - tail
    4:          [unnamed]                      - 219380148:1071+5
    5: global   pcall                          - C
    6:          [unnamed]                      - 219380148:963+53
    7:          [unnamed]                      - tail
    8: global   pcall                          - C
    9:          [unnamed]                      - 1098400342:784+58
   10:          [unnamed]                      - tail
   11:          [unnamed]                      - tail
   12: global   pcall                          - C
   13: upvalue  ?                              - 1995689076:82+23
   14: upvalue  ?                              - 1995689076:324+16
   15:          [unnamed]                      - 1995689076:341+81
   16: global   pcall                          - C
   17:          [unnamed]                      - 1002929302:1215+46
   18:          [unnamed]                      - tail
   19:          [unnamed]                      - tail
   20:          [unnamed]                      - tail
   21: method   dispatch                       - 1002929302:1002+70
   22:          [unnamed]                      - 1002929302:2091+10
   23:          [unnamed]                      - 1002929302:1913+109
   24: global   AgCallWithAutoreleasePool      - C
   25: method   run                            - 1002929302:1826+50
   26:          [unnamed]                      - 435542093:0+18
<end>
2025-11-14 14:10:15.761 Adobe Lightroom Classic[31377:3921868] ?:0: attempt to index a nil value
    0: global   error                          - C
    1:          [unnamed]                      - 219380148:963+107
    2:          [unnamed]                      - tail
    3: global   pcall                          - C
    4:          [unnamed]                      - 1098400342:784+58
    5:          [unnamed]                      - tail
    6:          [unnamed]                      - tail
    7: global   pcall                          - C
    8: upvalue  ?                              - 1995689076:82+23
    9: upvalue  ?                              - 1995689076:324+16
   10:          [unnamed]                      - 1995689076:341+81
   11: global   pcall                          - C
   12:          [unnamed]                      - 1002929302:1215+46
   13:          [unnamed]                      - tail
   14:          [unnamed]                      - tail
   15:          [unnamed]                      - tail
   16: method   dispatch                       - 1002929302:1002+70
   17:          [unnamed]                      - 1002929302:2091+10
   18:          [unnamed]                      - 1002929302:1913+109
   19: global   AgCallWithAutoreleasePool      - C
   20: method   run                            - 1002929302:1826+50
   21:          [unnamed]                      - 435542093:0+18
<end>
2025-11-14 14:10:15.761 Adobe Lightroom Classic[31377:3921868] ?:0: attempt to index a nil value
    0: global   assert                         - C
    1:          [unnamed]                      - 1098400342:784+103
    2:          [unnamed]                      - tail
    3:          [unnamed]                      - tail
    4: global   pcall                          - C
    5: upvalue  ?                              - 1995689076:82+23
    6: upvalue  ?                              - 1995689076:324+16
    7:          [unnamed]                      - 1995689076:341+81
    8: global   pcall                          - C
    9:          [unnamed]                      - 1002929302:1215+46
   10:          [unnamed]                      - tail
   11:          [unnamed]                      - tail
   12:          [unnamed]                      - tail
   13: method   dispatch                       - 1002929302:1002+70
   14:          [unnamed]                      - 1002929302:2091+10
   15:          [unnamed]                      - 1002929302:1913+109
   16: global   AgCallWithAutoreleasePool      - C
   17: method   run                            - 1002929302:1826+50
   18:          [unnamed]                      - 435542093:0+18
<end>
2025-11-14 14:10:15.761 Adobe Lightroom Classic[31377:3921612] ?:0: attempt to index a nil value
    0: global   error                          - C
    1:          [unnamed]                      - 345274524:76+54
    2:          [unnamed]                      - tail
    3:          [unnamed]                      - tail
    4: method   getRenderSettings              - 1692336380:476+111
    5: method   prepareExport                  - 1692336380:2499+59
    6: method   startExportingOneItem          - 488627366:1948+47
    7: method   startExport                    - 488627366:1799+47
    8:          [unnamed]                      - 488627366:2257+117
    9:          [unnamed]                      - 179812414:2298+12
<end>

[moved from bugs to discussions according to the community rules - Mod.]