title: Data path "" should NOT have additional properties(rebaseRootRelativeCssUrls)
body: <p>I am new at angular and I just want to update some packages and happen this issue. I have been finding this issue and nothing found a useful answer.</p>
  <p>Here is Error =&gt;</p>
  <pre><code>Schema validation failed with the following errors:
    Data path &quot;&quot; should NOT have additional properties(rebaseRootRelativeCssUrls).
  npm ERR! code ELIFECYCLE
  npm ERR! errno 1
  npm ERR! web@1.0.1 start: `ng serve --ssl`
  npm ERR! Exit status 1
  npm ERR!
  npm ERR! Failed at the web@1.0.1 start script.
  npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
  
  npm ERR! A complete log of this run can be found in:
  npm ERR!     C:\Users\me\AppData\Roaming\npm-cache\_logs\2020-12-21T07_08_11_784Z-debug.log
  </code></pre>
  <p>Here is Full Log = &gt;</p>
  <pre><code>&gt; 0 info it worked if it ends with ok
  &gt;     1 verbose cli [
  &gt;     1 verbose cli   'C:\\Program Files\\nodejs\\node.exe',
  &gt;     1 verbose cli   'C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js',
  &gt;     1 verbose cli   'start'
  &gt;     1 verbose cli ]
  &gt;     2 info using npm@6.14.6
  &gt;     3 info using node@v12.18.4
  &gt;     4 verbose run-script [ 'prestart', 'start', 'poststart' ]
  &gt;     5 info lifecycle web@1.0.1~prestart: web@1.0.1
  &gt;     6 info lifecycle web@1.0.1~start: web@1.0.1
  &gt;     7 verbose lifecycle web@1.0.1~start: unsafe-perm in lifecycle true
  &gt;     8 verbose lifecycle web@1.0.1~start: PATH of Environment
  &gt;     9 verbose lifecycle web@1.0.1~start: CWD: C:\me\Project1\web
  &gt;     10 silly lifecycle web@1.0.1~start: Args: [ '/d /s /c', 'ng serve --ssl' ]
  &gt;     11 silly lifecycle web@1.0.1~start: Returned: code: 1  signal: null
  &gt;     12 info lifecycle web@1.0.1~start: Failed to exec start script
  &gt;     13 verbose stack Error: web@1.0.1 start: `ng serve --ssl`
  &gt;     13 verbose stack Exit status 1
  &gt;     13 verbose stack     at EventEmitter.&lt;anonymous&gt; (C:\Program Files\nodejs\node_modules\npm\node_modules\npm-lifecycle\index.js:332:16)
  &gt;     13 verbose stack     at EventEmitter.emit (events.js:315:20)
  &gt;     13 verbose stack     at ChildProcess.&lt;anonymous&gt; (C:\Program Files\nodejs\node_modules\npm\node_modules\npm-lifecycle\lib\spawn.js:55:14)
  &gt;     13 verbose stack     at ChildProcess.emit (events.js:315:20)
  &gt;     13 verbose stack     at maybeClose (internal/child_process.js:1021:16)
  &gt;     13 verbose stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:286:5)
  &gt;     14 verbose pkgid web@1.0.1
  &gt;     15 verbose cwd C:\me\Project1\web
  &gt;     16 verbose Windows_NT 10.0.19041
  &gt;     17 verbose argv &quot;C:\\Program Files\\nodejs\\node.exe&quot; &quot;C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js&quot; &quot;start&quot;
  &gt;     18 verbose node v12.18.4
  &gt;     19 verbose npm  v6.14.6
  &gt;     20 error code ELIFECYCLE
  &gt;     21 error errno 1
  &gt;     22 error web@1.0.1 start: `ng serve --ssl`
  &gt;     22 error Exit status 1
  &gt;     23 error Failed at the web@1.0.1 start script.
  &gt;     23 error This is probably not a problem with npm. There is likely additional logging output above.
  &gt;     24 verbose exit [ 1, true ]
  </code></pre>
  <p>Please May I know Any Idea or any reason why this error happen?</p>