title: WARNING in Invalid background value at Ignoring. in Angular
body: <p>I have angular 4 application which is running fine on my local machine with <code>ng server</code> but when I try to build an application for production with <code>ng build -- prod</code> then i am getting below error, not getting what wrong with the production run. Error is:-</p>
  <pre><code>WARNING in Invalid background value at 12864:14. Ignoring.
  </code></pre>
  <p>Full detailed error</p>
  <pre><code>ERROR in : Type ModalsComponent in E:/Projects/Rudram Admin/Code/app/src/app/pages/ui-features/modals/modals.component.ts is part of the declarations 
  of 2 modules: JobListModdule in E:/Projects/Rudram Admin/Code/app/src/app/pages/joblist/joblist.module.ts and UiFeaturesModule in E:/Projects
  /Rudram Admin/Code/app/src/app/pages/ui-features/ui-features.module.ts! Please consider moving ModalsComponent in E:/Projects/Rudram Admin/Code
  /app/src/app/pages/ui-features/modals/modals.component.ts to a higher module that imports JobListModdule in E:/Projects/Rudram Admin/Code/app/src
  /app/pages/joblist/joblist.module.ts and UiFeaturesModule in E:/Projects/Rudram Admin/Code/app/src/app/pages/ui-features/ui-features.module.ts. You 
  can also create a new NgModule that exports and includes ModalsComponent in E:/Projects/Rudram Admin/Code/app/src/app/pages/ui-features/modals
  /modals.component.ts then import that NgModule in JobListModdule in E:/Projects/Rudram Admin/Code/app/src/app/pages/joblist/joblist.module.ts and
   UiFeaturesModule in E:/Projects/Rudram Admin/Code/app/src/app/pages/ui-features/ui-features.module.ts.
  </code></pre>
  <p><strong>Note-&gt;</strong> if i just simply use <code>ng build</code> then it's not throwing any error but in this case, application needs a long time to load – around 5 to 6 min.</p>