title: ERROR in Can't bind to 'readOnly' since it isn't a known property of 'button'
body: <p>guys i'm trying to install and configure a project of mine in angular. But i face these errors after doing NPM  install.
  here is the output after doing a installation.</p>
  <pre><code>ERROR in Can't bind to 'readOnly' since it isn't a known property of 'button'. (&quot;lex=&quot;5&quot; &gt;
                          &lt;button mat-icon-button mat-sm-button [disabled]=&quot;searchValempty&quot; [ERROR -&gt;][readonly]=&quot;!searchValempty&quot; color=&quot;primary&quot; class=&quot;my-search&quot; matTooltip=&quot;Search&quot; (click)=&quot;
  searchFil&quot;)
  Can't bind to 'readOnly' since it isn't a known property of 'button'. (&quot;ex=&quot;5&quot; &gt;
                          &lt;button mat-icon-button mat-sm-button [disabled]=&quot;!searchValempty&quot; [ERROR -&gt;][readonly]=&quot;!searchValempty&quot; color=&quot;primary&quot; class=&quot;my-search&quot; matTooltip=&quot;Search&quot; (click)=
  &quot;searchFil&quot;)
  Can't bind to 'readOnly' since it isn't a known property of 'button'. (&quot;ex=&quot;5&quot; &gt;
                          &lt;button mat-icon-button mat-sm-button [disabled]=&quot;!searchValempty&quot; [ERROR -&gt;][readonly]=&quot;!searchValempty&quot; color=&quot;primary&quot; class=&quot;my-search&quot; matTooltip=&quot;Search&quot; (click)=
  &quot;searchFil&quot;)
  Can't bind to 'readOnly' since it isn't a known property of 'button'. (&quot;
                                  &lt;button mat-icon-button mat-sm-button [disabled]=&quot;!searchValempty&quot; [ERROR -&gt;][readonly]=&quot;!searchValempty&quot; color=&quot;primary&quot; class=&quot;my-search&quot; matTooltip=&quot;Search&quot;
  (click)=&quot;searchFil&quot;)
  Can't bind to 'readOnly' since it isn't a known property of 'button'. (&quot;&quot;5&quot; &gt;
                          &lt;button mat-icon-button mat-sm-button [disabled]=&quot;!searchVlnValempty&quot; [ERROR -&gt;][readonly]=&quot;!searchVlnValempty&quot; color=&quot;primary&quot; class=&quot;my-search&quot; matTooltip=&quot;Search&quot; (c
  lick)=&quot;search&quot;)
  Can't bind to 'disabled' since it isn't a known property of 'li'. (&quot;           [class.disable]='!vlnmeta.meta.nextPage'
                                                  [ERROR -&gt;][disabled]='!vlnmeta.meta.nextPage'&gt;
                                                  &lt;span&gt;&lt;a href=&quot;j&quot;)
  Can't bind to 'fullscreenControl' since it isn't a known property of 'agm-polyline'.
  1. If 'agm-polyline' is an Angular component and it has 'fullscreenControl' input, then verify that it is part of this module.
  2. If 'agm-polyline' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' to the '@NgModule.schemas' of this component to suppress this message.
  3. To allow any property add 'NO_ERRORS_SCHEMA' to the '@NgModule.schemas' of this component. (&quot;        &lt;/button&gt;
                  &lt;agm-polyline strokeColor=&quot;rgba(0, 0, 0, 0.5)&quot; *ngIf=&quot;!ltrackchk&quot; [ERROR -&gt;][fullscreenControl]=&quot;true&quot;&gt;
                      &lt;agm-polyline-point *ngFor=&quot;let loc of traceroutelist&quot;)
  </code></pre>