redirection loop in my website

[dvir]

hi ,

i have a problem that i can't find solution to it, hope someone could help me here :

my homepage is https://www.cdsoft.co.il , but it redirects to https://www.cdsoft.co.il/index.php. 
That's fine but the problem is https://www.cdsoft.co.il/index.php has a canonical tag pointing to https://www.cdsoft.co.il/...

i've looked in my header.tpl file , and i have found this : 

{if isset($canonical_url) && $canonical_url}<link rel="canonical" href="{$canonical_url}" />{/if}

what to do ? how can i exclude my homepage ?

[PrestaHeroes USA]

most often we do not want to display domain/index.php but just domain...

also we often do not want to display .html at end of a URL

I recommend modifying your hosting environment to suppress /index.php  display.

this might solve issue 

there are  various ways to do this, easiest is to contact hosting

else google how to suppress index.php from url