Header Error in Ascent Theme

I’m trying to increase the logo size in Ascent theme by adjusting this in the header.php child theme:

goto line 61 where it says
<div class=”col-sm-3″>
and change it to
<div class=”col-sm-4″>
then goto line 78 where it says
<div class=”col-sm-9″>
and change it to
<div class=”col-sm-8″>

you can play with these numbers to adjust the size of the logo and menu next to it. just make sure the two numbers add up to 12.

But I get this error:

Warning: include_once(header-searchform.php): failed to open stream: No such file or directory in /home/content/p3pnexwpnas01_data02/19/3201319/html/wp-content/themes/ascent-child/header.php on line 99

Warning: include_once(): Failed opening ‘header-searchform.php’ for inclusion (include_path=’.:/usr/local/php5_4/lib/php’) in /home/content/p3pnexwpnas01_data02/19/3201319/html/wp-content/themes/ascent-child/header.php on line 99

Warning: include_once(header-banner.php): failed to open stream: No such file or directory in /home/content/p3pnexwpnas01_data02/19/3201319/html/wp-content/themes/ascent-child/header.php on line 102

Warning: include_once(): Failed opening ‘header-banner.php’ for inclusion (include_path=’.:/usr/local/php5_4/lib/php’) in /home/content/p3pnexwpnas01_data02/19/3201319/html/wp-content/themes/ascent-child/header.php on line 102