404 page not found on all blog posts...

hey there, i am running wordpress till 4.8 it went fine, i updated to 4.9 and it popped up saying on all my posts 404 not found with some ifast hosting links.
check it out please asap

it isn’t a wordpress error

Well, your home page works but all other links are dead. Please check whether you still have a file called .htaccess in the htdocs folder and whether it still contains this fragment:

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
# END WordPress

If the file does not exist, you can create a new file with the name “.htaccess” (using a file manager is recommended) and paste the snippet above into it.

I have it the same lines… null

@NamanG said:
I have it the same lines… null

I just checked your website and custom URLs like https://technaman.org/sponsers/ are working for me now. What exactly is the issue you see now?

I was able to fix it after removing some lines from wp-config.php, after that it worked just fine.