npm install error "npm ERR! must provide string spec"

i tried to install old nodejs app, but it's not worked.

npm ERR! must provide string spec

npm ERR! A complete log of this run can be found in:
npm ERR!     /root/.npm/_logs/2022-09-07T03_30_30_113Z-debug-0.log

my current node, npm version is

node -v
v16.17.0

npm -v
8.15.0

and my package.json is

{
  "requires": true,
  "lockfileVersion": 1,
  "dependencies": {
    "accepts": {
      "version": "1.3.5",
      "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.5.tgz",
      "integrity": "sha1-63d99gEXI6OxTopywIBcjoZ0a9I=",
      "requires": {
        "mime-types": "~2.1.18",
        "negotiator": "0.6.1"
      }
    },
    "after": {
      "version": "0.8.2",
      "resolved": "https://registry.npmjs.org/after/-/after-0.8.2.tgz",
      "integrity": "sha1-/ts5T58OAqqXaOcCvaI7UF+ufh8="
    },
    "arraybuffer.slice": {
      "version": "0.0.7",
      "resolved": "https://registry.npmjs.org/arraybuffer.slice/-/arraybuffer.slice-0.0.7.tgz",
      "integrity": "sha512-wGUIVQXuehL5TCqQun8OW81jGzAWycqzFF8lFp+GOM5BXLYj3bKNsYC4daB7n6XjCqxQA/qgTJ+8ANR3acjrog=="
    },

...

I think the reason this isn't working is because this package.json outdated. how could i install this package? What can I fix?