How to extract and merge multiple arrays from an array of object containing the array of interest?

 https://stackoverflow.com/questions/53149174/how-to-extract-and-merge-multiple-arrays-from-an-array-of-object-containing-the


You don't need flat function. You can use native array method.

data.reduce((acc: any, cur: any) => {
  return acc.concat(cur.subCategories.map((v: any) => v.label));
}, []);

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Check to be sure that port 22 is enabled before you reload

 https://superuser.com/questions/590600/ufw-is-active-but-not-enabled-why etting  ENABLED=yes  in  /etc/ufw/ufw.conf  did it for me. $ sudo ...