So none of these indicate a problem?
frappe@erpnext:~/frappe-bench$ find . -name *error.log
./logs/node-socketio.error.log
./logs/redis-queue.error.log
./logs/redis-cache.error.log
./logs/worker.error.log
./logs/redis-socketio.error.log
./logs/schedule.error.log
./logs/web.error.log
To be on the safe side of please first backup your data.