You configured b2evo to use URLs without index.php but you forgot to enable rewriting in .htaccess file.

Just add the following at the end of your .htaccess file

RewriteEngine On

# This line may be needed:
RewriteBase /b2/

# Redirect anything that's not an existing directory or file to index.php:
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^  index.php

My .htaccess file reads like this now but still getting the 404 error page.

# CATCH EVERYTHING INTO B2EVO:
# The following will allow you to have URL right off the site root,
# using index.php as a stub but not showing it.
# This will add support for URLs like: http://example.com/2006/08/29/post-title
# Redirect anything that's not an existing directory or file to index.php
#
# RewriteEngine On

# This line may be needed:
RewriteBase /b2/

# Redirect anything that's not an existing directory or file to index.php:
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^ index.php

Remove the # in line

# RewriteEngine On

That worked. Thank you.

No problem