angular 9 : Cannot read property 'pipe' of undefined at MatSelect.ngAfterContentInit

user_12217822 0
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I'm using angular 9 and added angular material but when I want to use mat-select, I can not select the option and get the following error.

core.js:6241 ERROR TypeError: Cannot read property 'pipe' of undefined
    at MatSelect.ngAfterContentInit (select.js:609)
    at callHook (core.js:4726)
    at callHooks (core.js:4690)
    at executeInitAndCheckHooks (core.js:4630)
    at refreshView (core.js:12054)
    at refreshComponent (core.js:13458)
    at refreshChildComponents (core.js:11729)
    at refreshView (core.js:12064)
    at refreshEmbeddedViews (core.js:13404)
    at refreshView (core.js:12035)
angular-material angular
1 Answers

Go to your package.json file and make sure your version is defined explicitly as defined on their site, and perhaps not too far behind your angular version. I'm using angular version 10.2.7 and my material version was 8.0.0. I've upgraded to 9.2.4 as on their site and its working now.

user_16596050
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