errors when activating

get all this errors after activation the plugin – Please advise:

Warning: call_user_func() expects parameter 1 to be a valid callback, class ‘Cherry_Interface_Builder’ does not have a method ‘get_instance’ in ….\wp-content\plugins\cherry-services-list\cherry-framework\cherry-core.php on line 299

Warning: session_start(): Cannot send session cache limiter – headers already sent (output started at H:\wamp64\www\gkc\wp-content\plugins\cherry-services-list\cherry-framework\cherry-core.php:299) in ……\wp-content\plugins\cherry-services-list\public\includes\class-cherry-services-list-form.php on line 44

Warning: call_user_func() expects parameter 1 to be a valid callback, class ‘Cherry_Interface_Builder’ does not have a method ‘get_instance’ in …….\wp-content\plugins\cherry-services-list\cherry-framework\cherry-core.php on line 299

Warning: call_user_func() expects parameter 1 to be a valid callback, class ‘Cherry_Interface_Builder’ does not have a method ‘get_instance’ in …….\wp-content\plugins\cherry-services-list\cherry-framework\cherry-core.php on line 299

Warning: Cannot modify header information – headers already sent by (output started at H:\wamp64\www\gkc\wp-content\plugins\cherry-services-list\cherry-framework\cherry-core.php:299) in ……\wp-includes\pluggable.php on line 1195

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