Need Help regarding error messages only by some accounts

Hello,

on our community site we have since 3 Weeks by some User Accounts this error messages on the top:

and we can not fix this problems, because it is not on all user accounts only 4-5 .

we run UNA on X-SiM Members

Version: 12.1.0 Installed: 9 Oct 2021

php.ini

allow_url_fopen = On

allow_url_include = Off

display_errors = Off

enable_dl = Off

file_uploads = On

max_execution_time = 120

max_input_time = 60

max_input_vars = 2000

memory_limit = 512M

post_max_size = 1024M

session.gc_maxlifetime = 1440

session.save_path = "/var/cpanel/php/sessions/ea-php73"

upload_max_filesize = 1024M

zlib.output_compression = Off

I have searched in the forum about the errors, increased the values, cleared the cache, but nothing seems to help.

Anyone an idea?

regads

Walter