With strict_sql_modes enabled it is not possible to view a vendor detail page, instead the following error is displayed:
Can't use an undefined value as an ARRAY reference at /usr/lib/x86_64-linux-gnu/perl5/5.24/DBI.pm line 2088.
After some digging around, the error seems to be being generated when this query is run:
Searching for vendors is broken as well (same reason I think)
I do not recreate that one, should have been fixed by
Bug 20144: [sql_modes] Fix GROUP BY clause in GetBasketsInfosByBookseller
Which SQL error do you get? If it does not print in the log, can you warn it?
Jenkins is currently failing because of this, the SQL error is:
"Non-grouping field 'expected_items' is used in HAVING clause"
*** This bug has been marked as a duplicate of bug 21725 ***