Error when changing my profile as admin

I cant put in a password when i edit my password on my profile as admin. im not sure what is happening

Alos why do i get this error when i edit my profile as admin.

[09-May-2020 04:37:49 UTC] PHP Fatal error:  Uncaught Error: [] operator not supported for strings in /mnt/wbhome/secondst/public_html/wp-content/themes/blackfyre/buddypress/members/single/member-header.php:259
Stack trace:
#0 /mnt/wbhome/secondst/public_html/wp-includes/template.php(725): require()
#1 /mnt/wbhome/secondst/public_html/wp-content/plugins/buddypress/bp-core/bp-core-template-loader.php(155): load_template('/mnt/wbhome/sec...', false)
#2 /mnt/wbhome/secondst/public_html/wp-content/plugins/buddypress/bp-core/bp-core-template-loader.php(61): bp_locate_template(Array, true, false)
#3 /mnt/wbhome/secondst/public_html/wp-content/themes/blackfyre/buddypress/members/single/home.php(7): bp_get_template_part('members/single/...')
#4 /mnt/wbhome/secondst/public_html/wp-includes/template.php(725): require('/mnt/wbhome/sec...')
#5 /mnt/wbhome/secondst/public_html/wp-content/plugins/buddypress/bp-core/bp-core-template-loader.php(155): load_template('/mnt/wbhome/sec...', false)
#6 /mnt/wbhome/secondst/public_html/wp-content/plugins/buddypress/bp-core/bp- in /mnt/wbhome/secondst/public_html/wp-content/themes/blackfyre/buddypress/members/single/member-header.php on line 259