Your log shows you are using Streamlab widgets that are failing. Please go to them to help fix the viewer count widget problem.
12:16:43.038: obs-browser: Uncaught (in promise) Something went wrong. (source: https://streamlabs.com/widgets/viewer-count?token=50B4DD27FFC125069996:0)
Your recent log shows you are experiencing network issues. We cannot fix those. Those are issues you need to work out on your end. Some, you will not be able to fix. They can be things like:
1) Your Internet Service Provider not delivering upload speed above the streaming bitrate you are setting
2) Your bitrate set above what your ISP service contract can deliver
3) Running processes on your computer that are taking up network bandwidth. Bring up Task Manager and go to the Processes tab. Click the Network column to sort and show the processes that are taking up networking bandwidth. Kill the one's that shouldn't be.
4) Other computers and devices in your location taking up Internet bandwidth. Turn them off.
5) Ingest service you are connecting to having data center problems (with ISP being ok)
6) Connection between you to ingest server is poor (with ISP being ok)
16:07:11.157: Output 'adv_stream': Number of dropped frames due to insufficient bandwidth/connection stalls: 84129 (9.3%)