We have couple of webistes with Joomla 3.7.5 with roksprocket v2.1.21
We have started testing them on php7.1 and when we try create a roksprocket module and add items we get the following message
Fatal error: Uncaught TypeError: Argument 1 passed to RokCommon_Ajax::exception_handler() must be an instance of Exception, instance of Error given in /var/www/html/test_3xxx/libraries/rokcommon/RokCommon/Ajax.php on line 107
we tried a fresh install and it worked correctly. It turned out for some reason a file (or files) had not been updated correctly when upgrading to latest version. We checked the file permissions and reran the upgrade. The error has gone away. Thanks for your help