Unable to connect to Redis server on localhost:6379 when running app.py from Worker Directory

[a-verma26]

When trying to run app.py from the Worker Directory on my Mac M1 for the Scan8 project, I encountered an error.
The error occurred after installing Redis server and other dependencies and it prevented the app.py from starting.
However, I did not install Redis server earlier as I only installed Redis.

The Error message:
ConnectionError: Error 8 connecting to localhost:6379. nodename nor servname provided, or not known.

Solution:

The "ConnectionError: Error 8 connecting to localhost:6379" error is related to the connection to the Redis server failing. This error can occur when the maximum number of open file descriptors has been reached and the operating system is unable to create new connections.

By using the ulimit -n 1024 command, the open file limit is increased to 1024 for the current shell session. This allows more connections to be created, which can solve the "ConnectionError" issue when connecting to Redis.

However, this is not a permanent solution as the open file limit will reset when a new shell session is started. By adding the ulimit -n 1024 command to the shell startup file, the open file limit will be increased permanently and the "ConnectionError" issue should be resolved for future shell sessions.

Please assign me this issue @Ammoniya @maanas-talwar