Panic: lib-sql: Too many bind args

[Joseph D Wagner]

 From /etc/dovecot/dovecot.conf:

mail_attribute_dict = proxy::attr

dict {
     attr = pgsql:/etc/dovecot/dovecot-attr-sql.conf.ext
}

 From /etc/dovecot/dovecot-attr-sql.conf.ext:

map {
   pattern = $key
   table = attributes
   fields {
     attr_name = $key
   }
   username_field = username
   value_field = attr_value
}


 From /var/log/maillog:

dovecot[51153]: dict(51395): Panic: lib-sql: Too many bind args (2) for statement: SELECT attr_name FROM attributes WHERE attr_name LIKE  AND username = ?
dovecot[51153]: dict(51395): Error: Raw backtrace:
     /usr/lib64/dovecot/libdovecot.so.0(+0xf8cab) [0x7f4c92274cab]
     -> /usr/lib64/dovecot/libdovecot.so.0(+0xf8d47) [0x7f4c92274d47]
     -> /usr/lib64/dovecot/libdovecot.so.0(+0x55c1d) [0x7f4c921d1c1d]
     -> dovecot/dict(+0x649a) [0x55921892349a]
     -> dovecot/dict(sql_statement_query+0x3e) [0x55921892a14e]
     -> dovecot/dict(+0xa296) [0x559218927296]
     -> /usr/lib64/dovecot/libdovecot.so.0(dict_iterate+0x23) [0x7f4c92238a23]
     -> dovecot/dict(+0x7860) [0x559218924860]
     -> dovecot/dict(+0x808c) [0x55921892508c]
     -> dovecot/dict(+0x8200) [0x559218925200]
     -> dovecot/dict(dict_command_input+0xee) [0x55921892534e]
     -> dovecot/dict(+0x6b9b) [0x559218923b9b]
     -> /usr/lib64/dovecot/libdovecot.so.0(connection_input_default+0x1b2) [0x7f4c9226fd42]
     -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_call_io+0x73) [0x7f4c9228c413]
     -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0x135) [0x7f4c9228dac5]
     -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_handler_run+0x50) [0x7f4c9228c4c0]
     -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_run+0x48) [0x7f4c9228c628]
     -> /usr/lib64/dovecot/libdovecot.so.0(master_service_run+0x17) [0x7f4c92203fd7]
     -> dovecot/dict(main+0x185) [0x559218923895]
     -> /lib64/libc.so.6(__libc_start_main+0xf3) [0x7f4c91dda493]
     -> dovecot/dict(_start+0x2e) [0x5592189238ee]

Joseph D Wagner