Installation Issue in MacOS

[Jude V Joseph]

Tried both the stable and latest pre-release version. Stuck with below error

Starting Langflow v1.0.0a37...
objc[26936]: +[__NSPlaceholderSet initialize] may have been in progress in another thread when fork() was called.
objc[26936]: +[__NSPlaceholderSet initialize] may have been in progress in another thread when fork() was called. We cannot safely call it or ignore it in the fork() child process. Crashing instead. Set a breakpoint on objc_initializeAfterForkError to debug.
[05/25/24 09:38:34] ERROR 2024-05-25 09:38:34 - ERROR - glogging - Worker (pid:26936) was sent SIGABRT! glogging.py:272

System: Mac OS, Monterey
Python version : 3.10.11
PIP version : 24.0

[dosubot]

Hey @judevjoseph! 👋 I'm here to help you with any issues you encounter while waiting for a human maintainer. Let's squash those bugs together!

The objc error during initialization might be related to the pywin32 dependency, which is specified with the marker sys_platform == 'win32'. This dependency is only relevant for Windows platforms and could potentially cause issues on non-Windows systems.

pywin32 = { version = "^306", markers = "sys_platform == 'win32'" }

If you are not on a Windows platform, this dependency should not be installed. However, if it is being installed incorrectly, it could lead to errors related to objc ^[1].

Additionally, there are several environment variables that need to be set for langflow to run correctly on MacOS. Here is a list of environment variables that langflow can use:

envVars:
  - key: LANGFLOW_CONFIG_DIR
    value: ~/.langflow
  - key: LANGFLOW_SAVE_DB_IN_CONFIG_DIR
    value: true
  - key: LANGFLOW_DATABASE_URL
    value: sqlite:///./langflow.db
  - key: LANGFLOW_LANGCHAIN_CACHE
    value: SQLiteCache
  - key: LANGFLOW_HOST
    value: 127.0.0.1
  - key: LANGFLOW_WORKERS
    value: 1
  - key: LANGFLOW_PORT
    value: 7860
  - key: LANGFLOW_LOG_LEVEL
    value: critical
  - key: LANGFLOW_LOG_FILE
    value: logs/langflow.log
  - key: LANGFLOW_FRONTEND_PATH
    value: /path/to/frontend/build/files
  - key: LANGFLOW_OPEN_BROWSER
    value: true
  - key: LANGFLOW_REMOVE_API_KEYS
    value: false
  - key: LANGFLOW_CACHE_TYPE
    value: memory
  - key: LANGFLOW_REDIS_HOST
    value: localhost
  - key: LANGFLOW_REDIS_PORT
    value: 6379
  - key: LANGFLOW_REDIS_DB
    value: 0
  - key: LANGFLOW_REDIS_CACHE_EXPIRE
    value: 3600
  - key: LANGFLOW_AUTO_LOGIN
    value: true
  - key: LANGFLOW_SUPERUSER
    value: admin
  - key: LANGFLOW_SUPERUSER_PASSWORD
    value: 123456
  - key: LANGFLOW_STORE_ENVIRONMENT_VARIABLES
    value: true
  - key: LANGFLOW_STORE_URL
    value: https://api.langflow.store
  - key: LANGFLOW_DOWNLOAD_WEBHOOK_URL
    value: 
  - key: LANGFLOW_LIKE_WEBHOOK_URL
    value: 

This configuration ensures that langflow can locate and use the necessary services and databases at the specified paths and with the provided API keys ^{[2][3][4][5][6]}.

For further troubleshooting, you can refer to the Common Installation Issues section in the documentation.

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[Gabriel Luiz Freitas Almeida]

Hey @judevjoseph

How are you?

This is related to the variable OBJC_DISABLE_INITIALIZE_FORK_SAFETY.

You should set this in your rc file (e.g ~/.zshrc) to make this error go away:
export OBJC_DISABLE_INITIALIZE_FORK_SAFETY=YES

[Jude V Joseph]

Thanks @ogabrielluiz .

Setting this value worked. In my case, it was with ".zprofile". Thanks for the support.