mat-select is not working

[catfishcoder]

Priority

High

Expected behavior

Select has to pop up select options

Actual behavior

No options on click.
filters.component.html error: type string is not assignable to type {[p: string]: string} for currentValue.
browser console: this.menu is undefiend; - on click + this.dropdown is undefined; - on load

Steps to reproduce the behavior

install the project -> run -> go to custom dashboard

Environment description

On angular 9 and 10 updates