No provider for ControlContainer - Angular 5

I am converting a purchased, third-party template into an Angular 5 app, and just ran into an error. I am very new to Angular 5 (I know AngularJS well however) and don't understand what it's trying to tell me? It seems to be related to a button which shows/hides the top navbar.

Error Message (from browser):

Error: Template parse errors:
No provider for ControlContainer ("imalize-styl-2 btn btn-primary " (click)="toggleNavigation()"><i class="fa fa-bars"></i> </a>
      [ERROR ->]<form role="search" class="navbar-form-custom" method="post" action="#">
        <div class="form-gro"): ng:///AppModule/TopNavigationNavbarComponent.html@4:6

component.html:

<div class="row border-bottom">
  <nav class="navbar navbar-static-top" role="navigation" style="margin-bottom: 0">
    <div class="navbar-header">
      <a class="minimalize-styl-2 btn btn-primary " (click)="toggleNavigation()"><i class="fa fa-bars"></i> </a>
      <form role="search" class="navbar-form-custom" method="post" action="#">
        <div class="form-group">
          <input type="text" placeholder="Search for something..." class="form-control" name="top-search" id="top-search">
        </div>
      </form>
    </div>
    <ul class="nav navbar-top-links navbar-right">
      <li>
        <a href="#">
          <i class="fa fa-sign-out"></i> Log out
        </a>
      </li>
    </ul>
  </nav>
</div>

component.ts

import { Component, OnInit } from '@angular/core';
import { smoothlyMenu } from '../../../app.helpers';

declare var jQuery: any;

@Component({
  selector: 'app-top-navigation-navbar',
  templateUrl: './top-navigation-navbar.component.html',
  styleUrls: ['./top-navigation-navbar.component.less']
})
export class TopNavigationNavbarComponent implements OnInit {

  toggleNavigation(): void {
    jQuery('body').toggleClass('mini-navbar');
    smoothlyMenu();
  }

  constructor() { }

  ngOnInit() {
  }

}

app.module.ts (this seems to be something a mentioned a lot when I google this, however it is not the Form throwing the error.)

...
import { ReactiveFormsModule, FormControl, FormsModule } from '@angular/forms';
...

Solution 1:

import FormsModule in addition to ReactiveFormsModule

Solution 2:

Import FormsModule and ReactiveFormsModule in views.module.ts(custome module file) file works for me :

views.module.ts

import { NgModule, NO_ERRORS_SCHEMA } from '@angular/core';
import { CommonModule } from '@angular/common';
import { RouterModule } from '@angular/router';
import { FormsModule, ReactiveFormsModule } from '@angular/forms';


@NgModule({
  imports: [
    CommonModule,
    RouterModule,
    FormsModule,
    ReactiveFormsModule,
    ...
  ],
  declarations: [
    ...
  ],
  exports: [
   ...
  ],
  schemas: [NO_ERRORS_SCHEMA]
})
export class ViewsModule { }