A bit further along. Noticed that the page behind was showing queued saves (red 4). Crash happens when you try to exit the facility manager. The queued saves seem to be stuck.
2021-07-26 14:09:04.273 INFOCheckpoint-B-000 - Initialized
2021-07-26 14:09:04.273 LOGFT Client Services Inited.
2021-07-26 14:09:04.278 LOGSessionId: 6270009
Browser: Firefox: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:90.0) Gecko/20100101 Firefox/90.0
WebGL Supported and Enabled. Type: WebGL 2.0
GPU-Vendor: Google Inc.
GPU-Renderer: ANGLE (NVIDIA GeForce GTX 1650 Direct3D11 vs_5_0 ps_5_0)
2021-07-26 14:09:05.135 LOGLoading player data from data.unity3d
2021-07-26 14:09:05.137 LOGInitialize engine version: 2020.2.5f1 (e2c53f129de5)
2021-07-26 14:09:05.138 LOGCreating WebGL 2.0 context.
2021-07-26 14:09:05.141 LOGRenderer: Mozilla
2021-07-26 14:09:05.142 LOGVendor: Mozilla
2021-07-26 14:09:05.142 LOGVersion: OpenGL ES 3.0 (WebGL 2.0)
2021-07-26 14:09:05.143 LOGGLES: 3
2021-07-26 14:09:05.150 LOGOPENGL LOG: Creating OpenGL ES 3.0 graphics device ; Context level ; Context handle 45120528
2021-07-26 14:09:08.411 INFOStats: WebGL 2.0 WebGL Mem: 46/128 MB Managed Mem: 25 MB Unity Mem: 20 MB Video Mem: 512 MB
2021-07-26 14:09:08.452 LOGInput Manager initialize...
2021-07-26 14:09:08.454 INFOCheckpoint-U-30 - Bootloader.Init Start - Mem: 10/21/31/128 MB
2021-07-26 14:09:08.488 INFOCheckpoint-U-31 - Init Loading Screen - Mem: 10/22/32/128 MB
2021-07-26 14:09:08.493 INFOCheckpoint-U-32 - Init AssetRegistry - Mem: 10/22/32/128 MB
2021-07-26 14:09:08.830 INFOCheckpoint-U-33 - Download Play Bundles - Mem: 11/23/35/128 MB
2021-07-26 14:09:08.845 INFOCheckpoint-U-34 - Init Local Storage - Mem: 11/23/35/128 MB
2021-07-26 14:09:08.853 INFOCheckpoint-U-35 - Init FlashVars - Mem: 11/23/35/128 MB
2021-07-26 14:09:08.895 INFOCheckpoint-U-40 - Init HUD - Mem: 11/23/35/128 MB
2021-07-26 14:09:09.510 INFOCheckpoint-U-45 - Init Farm Controller - Mem: 18/31/49/128 MB
2021-07-26 14:09:09.528 INFOCheckpoint-U-50 - Processing Params - Mem: 18/31/49/128 MB
2021-07-26 14:09:09.638 INFOCheckpoint-U-51 - Init Sub Controllers - Mem: 19/31/50/256 MB
2021-07-26 14:09:09.674 INFOCheckpoint-U-52 - Init Preferences - Mem: 20/31/51/256 MB
2021-07-26 14:09:09.675 INFOCheckpoint-U-53 - Load Prefs into UI - Mem: 20/31/51/256 MB
2021-07-26 14:09:09.917 INFOCheckpoint-U-54 - Init Engine - Mem: 18/30/48/256 MB
2021-07-26 14:09:09.929 INFOCheckpoint-U-55 - Init ItemDefs - Mem: 18/30/48/256 MB
2021-07-26 14:09:09.938 LOGUsing Facebook Unity SDK v8.1.1 with FBJSSDK/v8.0 FBUnityWebGL/8.1.1
2021-07-26 14:09:10.854 INFOCheckpoint-U-56 - Init RecipeDefs - Mem: 68/35/103/256 MB
2021-07-26 14:09:11.335 INFOCheckpoint-U-57 - Init Misc Defs - Mem: 68/31/100/256 MB
2021-07-26 14:09:11.478 INFOCheckpoint-U-60 - Load User - Mem: 56/30/86/256 MB
2021-07-26 14:09:13.513 INFOCheckpoint-U-61 - User Loaded - Mem: 65/31/97/256 MB
2021-07-26 14:09:13.515 INFOCheckpoint-U-62 - Main Avatar Loaded - Mem: 65/31/97/256 MB
2021-07-26 14:09:13.521 INFOCheckpoint-U-70 - Go To Farm - Mem: 65/31/97/256 MB
2021-07-26 14:09:13.525 INFOCheckpoint-U-75 - GoToFarmAsync - Mem: 65/31/97/256 MB
2021-07-26 14:09:15.083 INFOCheckpoint-DONE - Map Loaded - Mem: 79/43/122/256 MB
------------------------------------
2021-07-26 14:15:02.738 LOG149
2021-07-26 14:15:02.740 ERROR149
2021-07-26 14:15:02.742 LOGInvoking error handler due to
abort(149) at
jsStackTrace@https://cdn.slashkey.co...ramework.js.gz:2:16334
stackTrace@https://cdn.slashkey.com/...ramework.js.gz:2:16505
abort@https://cdn.slashkey.com/flash...ramework.js.gz:2:748
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unityFramework/Module.dynCall_viiii@https://cdn.slashkey.com/flash/farm/main/1231-235959/Build/Build237.framework.js.gz:2:578805
invoke_viiii@https://cdn.slashkey.co...ramework.js.gz:2:424046
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unityFramework/Module.dynCall_iiiii@https://cdn.slashkey.com/flash/farm/main/1231-235959/Build/Build237.framework.js.gz:2:553659
invoke_iiiii@https://cdn.slashkey.co...ramework.js.gz:2:376916
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unityFramework/Module.dynCall_v@https://cdn.slashkey.com/flash/farm/main/1231-235959/Build/Build237.framework.js.gz:2:566474
browserIterationFunc@https://cdn.sla...ramework.js.gz:2:186527
runIter@https://cdn.slashkey.com/fla...ramework.js.gz:2:189600
Browser_mainLoop_runner@https://cdn....ramework.js.gz:2:188062