macOS: The program seems to be silently crashing

[ymaniz09]

I noticed that after a while, the bot stops, and the UI disappears:

I wasn't able to spot anything on the execution logs:

────────────────────────────────────────────────────────────  Misdreavus encountered at Route 117 ────────────────────────────────────────────────────────────
┏━━━━━━━━━━━━┳━━━━━━━┳━━━━━━━━━━━━┳━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━┓
┃            ┃       ┃            ┃            ┃                 ┃                 ┃   Shiny    ┃
┃    PID     ┃ Level ┃    Item    ┃   Nature   ┃     Ability     ┃  Hidden Power   ┃   Value    ┃
┡━━━━━━━━━━━━╇━━━━━━━╇━━━━━━━━━━━━╇━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━┩
│  FFC7033E  │   5   │     -      │   Quirky   │    Levitate     │   Grass (59)    │   63,315   │
└────────────┴───────┴────────────┴────────────┴─────────────────┴─────────────────┴────────────┘
                 Misdreavus IVs
┏━━━━┳━━━━━┳━━━━━┳━━━━━━━┳━━━━━━━┳━━━━━┳━━━━━━━┓
┃ HP ┃ ATK ┃ DEF ┃ SPATK ┃ SPDEF ┃ SPD ┃ Total ┃
┡━━━━╇━━━━━╇━━━━━╇━━━━━━━╇━━━━━━━╇━━━━━╇━━━━━━━┩
│ 3  │ 31  │ 30  │   8   │  31   │ 31  │   134 │
└────┴─────┴─────┴───────┴───────┴─────┴───────┘
                                                  Statistics
┏━━━━━━━━━━━━┳━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━┳━━━━━━━━━━━━┳━━━━━━━━━━━━┳━━━━━━━━━━━━┳━━━━━━━━━━━━┓
┃            ┃  Phase IV  ┃    Phase SV     ┃      Phase ┃            ┃      Shiny ┃      Total ┃      Shiny ┃
┃            ┃  Records   ┃     Records     ┃ Encounters ┃    Phase % ┃ Encounters ┃ Encounters ┃    Average ┃
┡━━━━━━━━━━━━╇━━━━━━━━━━━━╇━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━╇━━━━━━━━━━━━╇━━━━━━━━━━━━╇━━━━━━━━━━━━╇━━━━━━━━━━━━┩
│ Misdreavus │  45 / 183  │   23 / 65,519   │      3,632 │     99.92% │          0 │      3,632 │        N/A │
│ Sableye    │ 102 / 170  │ 5,541 / 32,260  │          3 │      0.08% │          1 │      1,668 │    1/1,668 │
│ Total      │  45 / 183  │   23 / 65,519   │      3,635 │       100% │         97 │    706,750 │    1/7,286 │
└────────────┴────────────┴─────────────────┴────────────┴────────────┴────────────┴────────────┴────────────┘

Please let me know if/how I can provide more meaningful information about this issue =]