Not compatible with Angular 8

[rdandnayak]

After i try to run
ng update @angular/cli @angular/core
I face problem below

packageGroup metadata of package @angular/cli is malformed. Ignoring.
packageGroup metadata of package @angular/cli is malformed.
packageGroup metadata of package @angular/cli is malformed. Ignoring.
packageGroup metadata of package @angular/cli is malformed. Ignoring.
packageGroup metadata of package @angular/cli is malformed.
packageGroup metadata of package @angular/cli is malformed. Ignoring.
packageGroup metadata of package @angular/cli is malformed. Ignoring.
Package "ng2-codemirror" has an incompatible peer dependency to "@angular/forms" (requires "^2.1.0 || ^4.0.0" (extended), would install "8.2.10").
Package "ng2-codemirror" has an incompatible peer dependency to "@angular/core" (requires "^2.1.0 || ^4.0.0" (extended), would install "8.2.10").
Package "ng2-codemirror" has an incompatible peer dependency to "@angular/common" (requires "^2.1.0 || ^4.0.0" (extended), would install "8.2.10").
Incompatible peer dependencies found. See above.