System error when attempting to enable blog comments on a blog created by a profile

System error.
The following error message was returned:

 Incorrect integer value: '' for column 'related_max' at row 1
The query was:

update `tiki_blogs` set `title`=? ,`description`=?,`user`=?,`public`=?,`lastModif`=?,`maxPosts`=?,`heading`=?,`use_title`=?,`use_title_in_post`=?,`use_description`=?,`use_breadcrumbs`=?,`use_author`=?,`add_date`=?,`use_find`=?,`allow_comments`=?,`show_avatar`=?,`always_owner`=?, `post_heading`=?, `show_related`=?, `related_max`=?, `use_excerpt`=? where `blogId`=?
Values:

My Personal GeoBlog
Random daily thoughts and travel stories
admin
n
1501966273
10
Never a dull moment!
n
n
y
y
n
n
n
y
n
n
{* $Id: blog_post_heading.tpl 58008 2016-03-19 22:26:34Z lindonb $ *} {if $blog_data.use_title_in_post eq 'y'} {capture name="blog_actions"}{include file='blog_actions.tpl'}{/capture} {title url={$blogId|sefurl:blog} actions="{$smarty.capture.blog_actions}"}{$blog_data.title}{/title} {/if} {if $blog_data.use_breadcrumbs eq 'y'} <div class="breadcrumb"><a class="link" href="tiki-list_blogs.php">{tr}Blogs{/tr}</a> {$prefs.site_crumb_seper} <a class="link" href="tiki-view_blog.php?blogId={$post_info.blogId}">{$blog_data.title|escape}</a> {$prefs.site_crumb_seper} {$post_info.title|escape}</div> {/if} {* below is example code. In case you desire to add more info to the default blog heading * remove the line above (starting curly bracket then asterisk) and the last line to enable <div class="bloginfo"> {tr}Created by{/tr} {$post_info.user|userlink} {$post_info.created|tiki_short_datetime:on}<br> {tr}Last post{/tr} {$post_info.lastModif|tiki_short_datetime}<br> </div> *}
n
n
1
The built query was likely:

update `tiki_blogs` set `title`='My Personal GeoBlog' ,`description`='Random daily thoughts and travel stories',`user`='admin',`public`='n',`lastModif`='1501966273',`maxPosts`='10',`heading`='Never a dull moment!',`use_title`='n',`use_title_in_post`='n',`use_description`='y',`use_breadcrumbs`='y',`use_author`='n',`add_date`='n',`use_find`='n',`allow_comments`='y',`show_avatar`='n',`always_owner`='n', `post_heading`='{* $Id: blog_post_heading.tpl 58008 2016-03-19 22:26:34Z lindonb $ *} {if $blog_data.use_title_in_post eq \'y\'} {capture name=\"blog_actions\"}{include file=\'blog_actions.tpl\'}{/capture} {title url={$blogId|sefurl:blog} actions=\"{$smarty.capture.blog_actions}\"}{$blog_data.title}{/title} {/if} {if $blog_data.use_breadcrumbs eq \'y\'} <div class=\"breadcrumb\"><a class=\"link\" href=\"tiki-list_blogs.php\">{tr}Blogs{/tr}</a> {$prefs.site_crumb_seper} <a class=\"link\" href=\"tiki-view_blog.php'n'blogId={$post_info.blogId}\">{$blog_data.title|escape}</a> {$prefs.site_crumb_seper} {$post_info.title|escape}</div> {/if} {* below is example code. In case you desire to add more info to the default blog heading * remove the line above (starting curly bracket then asterisk) and the last line to enable <div class=\"bloginfo\"> {tr}Created by{/tr} {$post_info.user|userlink} {$post_info.created|tiki_short_datetime:on}<br> {tr}Last post{/tr} {$post_info.lastModif|tiki_short_datetime}<br> </div> *} ', `show_related`='', `related_max`='n', `use_excerpt`='1' where `blogId`=?
Stacktrace:

* /var/www/html/17.x/tiki-edit_blog.php : 0 -> {main}(array ( ))
* /var/www/html/17.x/tiki-edit_blog.php : 155 -> replace_blog(array ( ))
* /var/www/html/17.x/lib/blogs/bloglib.php : 481 -> query(array ( ))
* /var/www/html/17.x/lib/core/TikiDb/Bridge.php : 27 -> query(array ( ))
* /var/www/html/17.x/lib/core/TikiDb/Pdo.php : 120 -> handleQueryError(array ( ))
* /var/www/html/17.x/lib/core/TikiDb.php : 162 -> handle(array ( ))

The following changes have been applied

 Preference feature wiki comments enabled (Preference name: feature_wiki_comments)
 Preference feature inline comments enabled (Preference name: feature_inline_comments)
 Preference feature article comments enabled (Preference name: feature_article_comments)
 Preference comments vote enabled (Preference name: comments_vote)
 Preference feature image galleries comments enabled (Preference name: feature_image_galleries_comments)
 Preference tracker show comments below enabled (Preference name: tracker_show_comments_below)
 Preference feature poll comments enabled (Preference name: feature_poll_comments)
 Preference comments archive enabled (Preference name: comments_archive)
 Preference feature file galleries comments enabled (Preference name: feature_file_galleries_comments)
 Preference wiki comments simple ratings enabled (Preference name: wiki_comments_simple_ratings)
 Preference wikiplugininline trackercomments enabled (Preference name: wikiplugininline_trackercomments)
 Preference wiki comments displayed default enabled (Preference name: wiki_comments_displayed_default)
 Preference wiki comments form displayed default enabled (Preference name: wiki_comments_form_displayed_default)