wrong filter representation

[tejk]

I have hard time to get authenticate by my ldap.
my accountPattern looks like this
"(&(objectClass=*)(memberOf=cn=etherpad-groups,cn=accounts,dc=lab)(uid={{username}}))"

but i found this in my ldap log
conn=837 op=1 SRCH base="cn=users,cn=accounts,dc=lab" scope=2 filter="(&(=*\29)(=cn=etherpad-groups,cn=accounts,dc=lab\29)(=karel\29))" attrs\ALL

thx for any kind of help with this