Khronos - not displaying events in backend

[johnboyuk1]

Ive just installed this module on a new fresh CMSMS install. The Khronos page is not displaying any events Ive added on the admin screen... I see the main menu items - 'add event, import events' etc but underneath that is just a blank screen.

If I output the {Khronos} tag on the front end I can see that the test events I added are actually there.

Ive tried clearing the cache

[DIGI3]

There's a lot of javascript involved in the calendar display so make sure to check your console for clues.

[johnboyuk1]

think I may have solved this by trying a couple of different PHP versions, seems to need at least 8.1 (which my be a problem as I need to add it to an old site!)

[DIGI3]

I don't think that's true, but the php error logs should show what the issue is when using older versions.

[johnboyuk1]

this is the last error:

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[error]  AH01071: Got error 'PHP message: PHP Deprecated:  Using unregistered function "count" in a template is deprecated and will be removed in a future release. Use Smarty::registerPlugin to explicitly register a custom modifier. in /home/sites/40a/e/ecb1c61615/public_html/lib/smarty/sysplugins/smarty_internal_templatecompilerbase.php on line 651'

also this one which specifically mentions Khronos

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[error] [client 81.152.64.246:0] AH01071: Got error 'PHP message: PHP Warning:  Undefined variable $feu_uid in /home/sites/40a/e/ecb1c61615/public_html/modules/Khronos/function.displayevent.php on line 190PHP message: PHP Deprecated:  Using unregistered function "strtolower" in a template is deprecated and will be removed in a future release. Use Smarty::registerPlugin to explicitly register a custom modifier. in