Preface
1. Yes, I know common reasons for "blank page error"
2. Yes, I read FAQ (most popular page)
3. Yes, I tried STFW and FAQ-Forums on this site
4. No, I do nothing unusual with my site (more correct - I do nothing some time, and empty main page is new today's artefact

Small problem
Today I tried to open http://mta.e-city.net.ru/ and only for site root got blank page... After PHP-debug


twice - and nothing more

blocks are visible (according to admin panel data), tried to hide blocks - and got same effect and errors.

Main problem - what can be changed?!

Googling on this delivers quite many different possibilities.

PHP version changed on the server?

Did you edit mainfile.php and maybe left some empty lines at the end?

Delete object.php and upload it again?

I'll perform some additional observation and mostly solved problem, thus - I can give detailed and full answers and "disaster report"

Quote:
No... If I changed PHP I know, where to find my best enemy - "See into mirror, dude"
Quote:
No, this installation (was) untouched some time (14.01 last modules updates and new theme 22.01. With mainfile all pages have to be affected, not only one
Quote:
Tried diff with other installation (no differences), tried update - no changes.

And, at last, final!
As I think before (at start), it's one block from main page (my first test was dirty, I re-tested all blocks).
I can't explain only one - why this block can be shown without fatal errors [b]on every and each other page[b], except main. I moved block into module's page and all work now, but... I have unanswered question, interesting question.