node
ERR_ASYNC_CALLBACK: Callback not a function
ERR_ASYNC_CALLBACK.*callback.*not.*function
Fixes
- 1.Pass function as callback argument
- 2.Check callback parameter isn't undefined
- 3.Verify API expects callback pattern
callbackasynctype
Related Errors
node3 fixes
EADDRINUSE: Port already in use
Error: listen EADDRINUSE.*port
- •Kill process using the port: lsof -i :PORT
- •Use different port
node3 fixes
ECONNREFUSED: Connection refused
Error: connect ECONNREFUSED
- •Check target server is running
- •Verify host and port are correct
node3 fixes
ENOENT: No such file or directory
ENOENT.*no such file or directory
- •Check file path is correct
- •Use path.resolve for absolute paths