In the last few weeks, our ability to create new events has suddenly stopped, and we now just receive the message: Error 500: Could not instantiate mail function. The is consistent in both front and back end.

I've tried turning the notification plugin off and on again, but that doesn't make a difference. I have also tried to follow your instructions in relation to similar reported issues, e.g. Debug mode, error reporting level to maximum, etc. but am not seeing anything obvious. I'm afraid that I am somewhat of a naive user at this level.

I have applied the latest updates to no avail.

Any help greatly appreciated. Thanks!

Details of our setup:
Setting Value

PHP Built On Linux uk14.siteground.eu 3.12.18-clouder0 #2 SMP PREEMPT Mon Mar 7 20:55:37 EET 2022 x86_64
Database Type mysql
Database Version 5.7.32-35-log
Database Collation utf8mb4_general_ci
Database Connection Collation utf8mb4_general_ci
PHP Version 7.4.29
Web Server Apache
WebServer to PHP Interface cgi-fcgi
Joomla! Version Joomla! 3.10.9 Stable [ Daraja ] 7-May-2022 17:02 GMT
Joomla! Platform Version Joomla Platform 13.1.0 Stable [ Curiosity ] 24-Apr-2013 00:00 GMT
User Agent Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:100.0) Gecko/20100101 Firefox/100.0

PHP Version : 7.4.29

MySQL Version : 5.7.32-35-log

Server Information : Linux uk14.siteground.eu 3.12.18-clouder0 #2 SMP PREEMPT Mon Mar 7 20:55:37 EET 2022 x86_64

Fix jQuery? : Yes

Load JEvents Bootstrap CSS? : Yes

Max Input Vars ? : 3000

Club code set? : Yes  

User Agent : Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:100.0) Gecko/20100101 Firefox/100.0  

Joomla : 3.10.9

component_com_jevents : 3.6.36

component_com_jevlocations : 3.7.3

component_com_rsvppro : 3.7.11

component_com_virtuemart : 3.8.8

component_com_jce : 2.9.22

component_com_comprofiler : 2.7.2+build.2022.05.09.18.01.50.cff9cffac

component_plg_kunena_comprofiler : 5.2.8

component_com_acymailing : 5.10.28

module_mod_acym : 7.8.1

module_mod_acymailing : 3.7.0

module_mod_acymailing_latest_j30 : 1.2.0

module_mod_jevents_cal : 3.6.36

module_mod_jevents_custom : 3.6.36

module_mod_jevents_filter : 3.6.36

module_mod_jevents_latest : 3.6.36

module_mod_jevents_legend : 3.6.36

module_mod_jevents_notify : 3.6.2

module_mod_jevents_slideshow : 3.6.1

module_mod_jevents_switchview : 3.6.36

module_mod_jevlocations : 3.7.3

module_mod_jevlocations_location : 3.7.3

layout_JEventsSmartphoneLayout : 3.4.1

layout_smartphone : 3.0.10

plugin_actionlog_jevents : 3.6.36 (not enabled)

plugin_acymailing_calltoaction : 1.1.3

plugin_acymailing_contentplugin : 3.7.0

plugin_acymailing_geolocation : 5.10.28

plugin_acymailing_kunena_j30 : 4.0.5 (not enabled)

plugin_acymailing_listowner_j30 : 1.0.1 (not enabled)

plugin_acymailing_managetext : 1.0.0

plugin_acymailing_online : 3.7.0

plugin_acymailing_phocadownload_j30 : 1.1.0 (not enabled)

plugin_acymailing_plgbirthday_j30 : 4.0.0 (not enabled)

plugin_acymailing_plgfinder_j30 : 1.1.0 (not enabled)

plugin_acymailing_plginboxactions : 5.10.28

plugin_acymailing_share : 1.0.0

plugin_acymailing_stats : 3.7.0

plugin_acymailing_tablecontents : 1.0.0

plugin_acymailing_tagcontent : 3.7.0

plugin_acymailing_tagjevents_j30 : 2.8.0 (not enabled)

plugin_acymailing_tagjevents_jevents : 3.1.1

plugin_acymailing_tagmodule : 5.10.28

plugin_acymailing_tagsubscriber : 5.10.28

plugin_acymailing_tagsubscription : 5.10.28

plugin_acymailing_tagtime : 5.10.28

plugin_acymailing_taguser : 5.10.28

plugin_acymailing_template : 5.10.28

plugin_acymailing_urltracker : 5.10.28

plugin_content_jevents : 3.6.36

plugin_content_jevlocation_embed : 3.7.3

plugin_editors_acyeditor : 5.10.28

plugin_finder_jevents : 3.6.36

plugin_installer_jeventsinstaller : 3.6.36 (not enabled)

plugin_jevents_jevcustomfields : 3.7.3

plugin_jevents_jevfacebooksocial : 3.6.0

plugin_jevents_jevfiles : 3.10.3

plugin_jevents_jevjcomments : 3.1.2

plugin_jevents_jevlocations : 3.7.3

plugin_jevents_jevnotify : 3.6.2 (not enabled)

plugin_jevents_jevpopupdetail : 3.6.1

plugin_jevents_jevrsvppro : 3.7.11

plugin_jevents_jevtimelimit : 3.6.3

plugin_jevents_jevusers : 3.6.0

plugin_k2_k2embedded : 3.6.0

plugin_kunena_comprofiler : 5.2.8

plugin_rsvppro_authorizenet : 3.7.11

plugin_rsvppro_manual : 3.7.11

plugin_rsvppro_mollie : 3.7.11 (not enabled)

plugin_rsvppro_paypalexpress : 3.7.11 (not enabled)

plugin_rsvppro_paypalipn : 3.7.11

plugin_rsvppro_quickpay : 3.7.11 (not enabled)

plugin_rsvppro_stripe : 3.7.11 (not enabled)

plugin_search_acymailing : 7.8.1

plugin_search_acymailingsearch_j30 : 1.0.2 (not enabled)

plugin_search_eventsearch : 3.6.36

plugin_search_jevlocsearch : 3.7.3

plugin_system_acymailingclassmail : 5.10.28 (not enabled)

plugin_system_acymailingurltracker : 5.10.28

plugin_system_acymailoverride : 7.8.1

plugin_system_acymtriggers : 7.8.1

plugin_system_autotweetacymailing_j30 : 1.2.5 (not enabled)

plugin_system_gwejson : 3.6.36

plugin_system_hika_rsvp_redirect : 3.7.11

plugin_system_sendinarticle : 5.10.28