Getting Whoops\Exception\ErrorException Invalid URL: '' if the Cal DAV Calendar credentials is wrong.
Whoops\Exception\ErrorException thrown with message "Invalid URL: ''"
Stacktrace:
#10 Whoops\Exception\ErrorException in /var/www/html/admin/modules/calendar/vendor/thecsea/simple-caldav-client/src/CalDAVClient.php:115
#9 trigger_error in /var/www/html/admin/modules/calendar/vendor/thecsea/simple-caldav-client/src/CalDAVClient.php:115
#8 it\thecsea\simple_caldav_client\CalDAVClient:__construct in /var/www/html/admin/modules/calendar/vendor/thecsea/simple-caldav-client/src/SimpleCalDAVClient.php:67
#7 it\thecsea\simple_caldav_client\SimpleCalDAVClient:connect in /var/www/html/admin/modules/calendar/drivers/Caldav.php:85
#6 FreePBX\modules\Calendar\drivers\Caldav:processCalendar in /var/www/html/admin/modules/calendar/drivers/Caldav.php:71
#5 FreePBX\modules\Calendar\drivers\Caldav:updateCalendar in /var/www/html/admin/modules/calendar/drivers/Base.php:70
#4 FreePBX\modules\Calendar\drivers\Base:addCalendar in /var/www/html/admin/modules/calendar/Calendar.class.php:165
#3 FreePBX\modules\Calendar:getDriverByAdd in /var/www/html/admin/modules/calendar/Calendar.class.php:66
#2 FreePBX\modules\Calendar:doConfigPageInit in /var/www/html/admin/libraries/BMO/GuiHooks.class.php:290
#1 FreePBX\GuiHooks:doBMOConfigPage in /var/www/html/admin/libraries/BMO/GuiHooks.class.php:252
#0 FreePBX\GuiHooks:doConfigPageInits in /var/www/html/admin/config.php:417