Upgraded to 7.1.1, from 6.3.1 and now, several places in the admin panel I get error messages.
For example, on the admin panel home page, I get the following messages:
Warning: implode(): Invalid arguments passed in /home2/XXXXXX/public_html/modules/widgets/Overview.php on line 123
Warning: implode(): Invalid arguments passed in /home2/XXXXXX/public_html/modules/widgets/Automation.php on line 71
Warning: implode(): Invalid arguments passed in /home2/XXXXXX/public_html/modules/widgets/Automation.php on line 72
Warning: implode(): Invalid arguments passed in /home2/XXXXXX/public_html/modules/widgets/Automation.php on line 73
Warning: implode(): Invalid arguments passed in /home2/XXXXXX/public_html/modules/widgets/Automation.php on line 74
Warning: implode(): Invalid arguments passed in /home2/XXXXXX/public_html/modules/widgets/Automation.php on line 75
Warning: implode(): Invalid arguments passed in /home2/XXXXXX/public_html/modules/widgets/Automation.php on line 76
Warning: Invalid argument supplied for foreach() in /home2/XXXXXX/public_html/modules/widgets/ToDo.php on line 37
Other warnings on many of the other pages.
I have uploaded the files twice, just in case something was missed.
For now, I have disabled warnings in PHP, but that's a band-aid, not a fix.