Actual fix -- MOVED TO TEMPLATE

lib/backend.py

@@ -431,4 +431,4 @@ class Backend:
             if os.path.isfile(self.model_log_file) is True:
                 return await tail_log()
             else:
-                await sleep(1)
+                await asyncio.sleep(1)

start_server.sh

@@ -41,14 +41,6 @@ echo_var DEBUG_LOG
 echo_var PYWORKER_LOG
 echo_var MODEL_LOG
 
-# if instance is rebooted, we want to clear out the log file so pyworker doesn't read lines
-# from the run prior to reboot. past logs are saved in $MODEL_LOG.old for debugging only
-if [ -e "$MODEL_LOG" ]; then
-    echo "Rotating model log at $MODEL_LOG to $MODEL_LOG.old"
-    cat "$MODEL_LOG" >> "$MODEL_LOG.old" 
-    : > "$MODEL_LOG"
-fi
-
 # Populate /etc/environment with quoted values
 if ! grep -q "VAST" /etc/environment; then
     env -0 | grep -zEv "^(HOME=|SHLVL=)|CONDA" | while IFS= read -r -d '' line; do