Homebrew permissions error

[iteearmah]

Unfortunately, the operation returned an error code for some reason. You may find that the formulae have been correctly installed or upgraded. Unfortunately, I can't do much about this. Please check out the last few messages from Homebrew here for more information on what happened:

Warning: formula.jws.json: update failed, falling back to cached version.

Error: Operation not permitted @ apply2files - /Users/[username]/Library/Caches/Homebrew/api/formula.jws.json

[nicoverbruggen]

This, I believe, is a permissions issue. What's the output of brew doctor?

That command can help you track down any kind of issues related to permissions and the like.

[iteearmah]

Please note that these warnings are just used to help the Homebrew maintainers
with debugging if you file an issue. If everything you use Homebrew for is
working fine: please don't worry or file an issue; just ignore this. Thanks!

Warning: Some installed casks are deprecated or disabled.
You should find replacements for the following casks:
wkhtmltopdf

Warning: Some installed formulae are deprecated or disabled.
You should find replacements for the following formulae:
node@14
node@16
openssl@1.1
php@7.4
php@8.0

Warning: Unbrewed dylibs were found in /usr/local/lib.
If you didn't put them there on purpose they could cause problems when
building Homebrew formulae, and may need to be deleted.

Unexpected dylibs:
/usr/local/lib/libwkhtmltox.0.12.6.dylib

Warning: Unbrewed header files were found in /usr/local/include.
If you didn't put them there on purpose they could cause problems when
building Homebrew formulae, and may need to be deleted.

Unexpected header files:
/usr/local/include/wkhtmltox/image.h
/usr/local/include/wkhtmltox/pdf.h

Warning: You have unlinked kegs in your Cellar.
Leaving kegs unlinked can lead to build-trouble and cause formulae that depend on
those kegs to fail to run properly once built. Run brew link on these:
php

Warning: Some taps are not on the default git origin branch and may not receive
updates. If this is a surprise to you, check out the default branch with:
git -C $(brew --repo supi/taps) checkout
git -C $(brew --repo itee/local-icu4c) checkout

[nicoverbruggen]

Try running brew cleanup -d -v and try again. If the problem persists, it may be worth removing your Homebrew install and setting it up again from scratch. It's possible something went wrong when Homebrew updated itself.

[nicoverbruggen]

It may also be worth reading through these replies: Homebrew/homebrew-core#45009

Taking ownership of files seems a common instruction, so you can try that too: sudo chmod -R g+rwx /usr/local/* (after which you should run brew cleanup and then should be able to use PHP Monitor to install the appropriate extensions)

[iteearmah]

I usesudo chown -R ${LOGNAME}:staff /Users/[username]/Library/Caches/Homebrew/api/formula.jws.json which fixed it