Files not uploading

I am getting the following error trying to upload documents.

Any direction on what could be wrong?

Warning: fopen([“http:\/\/resources.divinitree.com\/wp-content\/uploads\/sites\/32\/gravity_forms\/3-828d56660284096fcd63f73dd55207de\/2014\/07\/images-343.jpeg”]): failed to open stream: No such file or directory in /home/divinitr/public_html/wp-content/plugins/gravity-forms-dropbox-uploader/dropbox-api/API.php on line 114

Warning: stream_get_contents() expects parameter 1 to be resource, boolean given in /home/divinitr/public_html/wp-content/plugins/gravity-forms-dropbox-uploader/dropbox-api/API.php on line 294

Fatal error: Uncaught exception ‘Dropbox_Exception’ with message ‘Uploading file to Dropbox failed’ in /home/divinitr/public_html/wp-content/plugins/gravity-forms-dropbox-uploader/dropbox-api/API.php:123 Stack trace: #0 /home/divinitr/public_html/wp-content/plugins/gravity-forms-dropbox-uploader/dropbox.php(527): Dropbox_API->putFile(‘ProductSamples/…’, ‘[“http:\\/\\/reso…’) #1 [internal function]: GFdropbox::set_post_content(Array, Array) #2 /home/divinitr/public_html/wp-includes/plugin.php(470): call_user_func_array(Array, Array) #3 /home/divinitr/public_html/wp-content/plugins/gravityforms/form_display.php(422): do_action(‘gform_post_subm…’, Array, Array) #4 /home/divinitr/public_html/wp-content/plugins/gravityforms/gravityforms.php(1640): GFFormDisplay::get_form(‘3’, false, false, false, Array, true, 1) #5 /home/divinitr/public_html/wp-content/plugins/gravityforms/gravityforms.php(1079): GFForms::get_form(‘3’, false, false, false, Array, true, 1) #6 [internal function]: GFForms::parse_shortcode(Array, ”, ‘gravi in /home/divinitr/public_html/wp-content/plugins/gravity-forms-dropbox-uploader/dropbox-api/API.php on line 123

https://ww.wp.xz.cn/plugins/gravity-forms-dropbox-uploader/