Need help on 'HTTP ERROR 500' when create/edit an event from backend/admin site

Hi all,

Im getting HTTP ERROR 500 when try to update or create new events from the back ends.
But having no issue to create event from front end. Really appreciate any response on this.
Below is some info related
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PHP Version : 7.4.11
MySQL Version : 5.5.5-10.4.8-MariaDB
Server Information : Windows NT WTCWEB01W 6.3 build 9600 (Windows Server 2012 R2 Standard Edition) AMD64
Fix jQuery? : Yes
Load JEvents Bootstrap CSS? : Yes
Max Input Vars ? : 3000
Club code set? : No
User Agent : Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.102 Safari/537.36
Joomla : 3.10.6
component_com_jevents : 3.4.55
component_com_jce : 2.4.5
module_mod_jevents_cal : 3.4.55
module_mod_jevents_custom : 3.4.55
module_mod_jevents_filter : 3.4.54
module_mod_jevents_latest : 3.4.55
module_mod_jevents_legend : 3.4.55
module_mod_jevents_switchview : 3.4.55
plugin_actionlog_jevents : 3.6.25 (not enabled)
plugin_content_jevents : 3.4.55
plugin_finder_jevents : 3.4.55 (not enabled)
plugin_installer_jeventsinstaller : 3.4.55 (not enabled)
plugin_search_eventsearch : 3.4.55
plugin_system_gwejson : 3.4.55
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