Teams aren’t showing on new season since update

OK so I tried to setup games for a new season and noticed it wouldn’t let me do so

So I attempted to add teams and got this error

‘Fatal error: Can’t use method return value in write context in *****/wp-content/plugins/leaguemanager/admin/team.php on line 16’

And then when I looked at the seasons I saw that the season had 0 teams even tho this is the 6th season I have entered….

Please help!