I want to send email to members with a link to the membership renewal page profiled with their data. I create a suitable link including the contact ID and checksum, of the form
If I'm logged and the link is for me then it works. If I'm not logged a Fatal Error is generated, and the site (WP) presents the message "The site is experiencing technical difficulties".
Nothing appears in the CiviCRM log, but in the Apache log I see:
Sep 09 13:56:02 [Wed Sep 09 12:56:02.301893 2020] [php7:error] [pid 203] [client 172.18.0.1:41254] PHP Fatal error: Uncaught CRM_Core_Exception: [0: One of parameters (value: ) is not of the type Integer\n\n thrown in /app/data/wp-content/plugins/civicrm/civicrm/CRM/Utils/Type.php on line 470 Sep 09 13:56:02 172.18.0.1 - - [09/Sep/2020:12:56:01 +0000] "GET /civicrm?page=CiviCRM&q=civicrm/contribute/transact&reset=1&id=2&cid=213&cs=1ccf75cf22138bd255525af8c8c05dc4_1599646931_168 HTTP/1.1" 500 3081 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:80.0) Gecko/20100101 Firefox/80.0"
Using Civi 5.29 with WP 5.21. I had the same problem using Civi 5.25.0. I'm using a Cloudron LAMP stack, which makes things a little more complicated.
Any pointers most welcome.