Buttons not showing on emails. They appear as links. [Mautic 4.4.8]

[bgit-c]

Your software
My Mautic version is: 4.4.8
My PHP version is: 8.0
My Database type and version is: Mysql

Buttons Not Showing on Emails/Buttons showing as links

Buttons are not showing in emails sent. They appear as links.

Buttons are only visible when building (new builder) and on preview. But on sent emails they appear as links.

Below are the images.

Email Build.

Result.

Steps I have tried to fix the problem:

• Customizing the button
• Reduce button border

[bgit-c]

It was a template issue. I had used the blank template. To solve the issue I have picked a different template and edited it from scratch.