ошибки в консоли

[2020-09-23 18:08:45] (ERROR @ /home/a/avr/core/model/modx/rest/modrestclient.class.php : 240) PHP warning: simplexml_load_string(): Entity: line 3: parser error : Opening and ending tag mismatch: error line 2 and response
[2020-09-23 18:08:45] (ERROR @ /home/a/avr/core/model/modx/rest/modrestclient.class.php : 240) PHP warning: simplexml_load_string(): Entity: line 3: parser error : Premature end of data in tag error line 2
[2020-09-23 18:08:45] (ERROR @ /home/a/avr/core/model/modx/rest/modrestclient.class.php : 240) PHP warning: simplexml_load_string(): Entity: line 3: parser error : Premature end of data in tag response line 1
[2020-09-23 18:08:45] (ERROR @ /home/a/avr/core/model/modx/rest/modrestclient.class.php : 245) Could not connect to provider at: http://api.stopforumspam.org/

что они значат и как победить?
происходит при отправке форм, формы отправляются