Just installed the last github-repos of SMF 2.1 (beta 4!) and TP.
Got a general error "8192: Methods with the same name as their class will not be constructors in a future version of PHP; chain has a deprecated constructor" in TPSubs.php line 539.
And the Database-Error on "Home":
Expression #9 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'smf21.a.id_attach' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by
Server is running PHP7/FPM... I think I have to read all threads about PHP7...
Fixed the database error and an error on adding articels by changing sql_mode(s).