Wow - recent change ( latest cjlib update??)  causes 500 error after a user subscribes to our site ( 500 on return page - after an otherwise successful subscription)

error log indicates some kind of guzzle conflict??

[Wed Nov 10 20:54:31.472312 2021] [php7:error] [pid 5776] [client 206.125.202.234:58067] PHP Fatal error: Cannot redeclare GuzzleHttp\\json_decode() (previously declared in /var/www/html/[redacted]/html/libraries/CBLib/GuzzleHttp/functions.php:299) in /var/www/html/[redacted]/html/libraries/cjlib/vendor/guzzlehttp/guzzle/src/functions.php on line 147, referer: https://[redacted]/en/component/comprofiler/registers

any ideas how to fix???

php 7.4.25

joomla 3.10.3

cjforum 4.0.3

cjlib 3.2.4