How can I fix npm errors and warnings? Does 'npm audit fix' work?

Question

How can I fix npm errors and warnings? It worked before... But now it doesn't work... Also does npm audit fix work?

npm -v 6.14.6 node -v v12.18.4

npm notice created a lockfile as package-lock.json. You should commit this file. npm WARN meeting@1.0.0 No description npm WARN meeting@1.0.0 No repository field.

• lite-server@2.5.4 added 217 packages from 213 contributors and audited 217 packages in 8.82s

4 packages are looking for funding run npm fund for details

found 1 low severity vulnerability run npm audit fix to fix them, or npm audit for details

Users-MacBook-Pro:meeting user$ npm fund meeting@1.0.0 ├─┬ https://github.com/sponsors/jonschlinkert │ └── picomatch@2.2.2 ├─┬ https://github.com/sponsors/RubenVerborgh │ └── follow-redirects@1.13.0 ├─┬ https://github.com/sponsors/sindresorhus │ └── p-limit@2.3.0 └─┬ https://github.com/chalk/ansi-styles?sponsor=1
└── ansi-styles@4.2.1

Users-MacBook-Pro:meeting user$ npm audit fix npm WARN meeting@1.0.0 No description npm WARN meeting@1.0.0 No repository field.

up to date in 0.69s

4 packages are looking for funding run npm fund for details

fixed 0 of 1 vulnerability in 217 scanned packages 1 vulnerability required manual review and could not be updated Users-MacBook-Pro:meeting user$