The target entry-point "@ngrx/store" has missing dependencies: – @angular/core

After installing ngrx store I get this error, anybody knows why?
your help is highly appreciated.
thanks in advanced

C:UsersuserDesktopNgRxExamplengrx-applications>ng s -o

chunk {main} main.js, main.js.map (main) 2.04 kB [initial] [rendered]
chunk {polyfills} polyfills.js, polyfills.js.map (polyfills) 697 bytes [initial] [rendered]
chunk {runtime} runtime.js, runtime.js.map (runtime) 6.15 kB [entry] [rendered]
chunk {styles} styles.js, styles.js.map (styles) 9.73 kB [initial] [rendered]
chunk {vendor} vendor.js, vendor.js.map (vendor) 340 kB [initial] [rendered]
Date: 2020-09-11T05:00:32.637Z - Hash: 7a41446eaa7b76a1e566 - Time: 2949ms

ERROR in The target entry-point "@ngrx/store" has missing dependencies:
– @angular/core

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Source: Angular Questions