contextMenu not bind With Html in angular 12.

[ketanpanther]

error TS2322: Type 'ContextMenuComponent | null' is not assignable to type 'ContextMenuComponent'.
Type 'null' is not assignable to type 'ContextMenuComponent'.

[contextMenu]="!this.loadingSeasonAndSupplier ? basicMenu : null" [contextMenuSubject]="item"
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