User Sync Plugin Fails to Sync

Trying to sync between 2 sites. Both are dev sites so no harm, no foul when something goes wrong. Both sites are at WordPress 4.5.3.

Master site: https://lmh.sitegeeks.us
Sub site: https://lmhp.sitegeeks.us

Tried to initialize the User Sync from the Master Site, failed with the helpful message that the User Sync failed. Tried from the Sub Site. Same error message. After failing to sync from either site (Master or Sub), I turned on Debug Mode. Started the Sync again from the Subsite. Got these error messages on screen:

Warning: fopen(/home/gowithme/public_html/lmhp/wp-content/plugins/user-sync/log/errors_s.log): failed to open stream: No such file or directory in /home/gowithme/public_html/lmhp/wp-content/plugins/user-sync/user-sync.php on line 169

Warning: fwrite() expects parameter 1 to be resource, boolean given in /home/gowithme/public_html/lmhp/wp-content/plugins/user-sync/user-sync.php on line 171

Warning: fclose() expects parameter 1 to be resource, boolean given in /home/gowithme/public_html/lmhp/wp-content/plugins/user-sync/user-sync.php on line 172

Warning: fopen(/home/gowithme/public_html/lmhp/wp-content/plugins/user-sync/log/errors_s.log): failed to open stream: No such file or directory in /home/gowithme/public_html/lmhp/wp-content/plugins/user-sync/user-sync.php on line 169

Warning: fwrite() expects parameter 1 to be resource, boolean given in /home/gowithme/public_html/lmhp/wp-content/plugins/user-sync/user-sync.php on line 171

Warning: fclose() expects parameter 1 to be resource, boolean given in /home/gowithme/public_html/lmhp/wp-content/plugins/user-sync/user-sync.php on line 172

Warning: fopen(/home/gowithme/public_html/lmhp/wp-content/plugins/user-sync/log/errors_s.log): failed to open stream: No such file or directory in /home/gowithme/public_html/lmhp/wp-content/plugins/user-sync/user-sync.php on line 169

Warning: fwrite() expects parameter 1 to be resource, boolean given in /home/gowithme/public_html/lmhp/wp-content/plugins/user-sync/user-sync.php on line 171

Warning: fclose() expects parameter 1 to be resource, boolean given in /home/gowithme/public_html/lmhp/wp-content/plugins/user-sync/user-sync.php on line 172

Warning: fopen(/home/gowithme/public_html/lmhp/wp-content/plugins/user-sync/log/errors_s.log): failed to open stream: No such file or directory in /home/gowithme/public_html/lmhp/wp-content/plugins/user-sync/user-sync.php on line 169

Warning: fwrite() expects parameter 1 to be resource, boolean given in /home/gowithme/public_html/lmhp/wp-content/plugins/user-sync/user-sync.php on line 171

Warning: fclose() expects parameter 1 to be resource, boolean given in /home/gowithme/public_html/lmhp/wp-content/plugins/user-sync/user-sync.php on line 172

Warning: fopen(/home/gowithme/public_html/lmhp/wp-content/plugins/user-sync/log/errors_s.log): failed to open stream: No such file or directory in /home/gowithme/public_html/lmhp/wp-content/plugins/user-sync/user-sync.php on line 169

Warning: fwrite() expects parameter 1 to be resource, boolean given in /home/gowithme/public_html/lmhp/wp-content/plugins/user-sync/user-sync.php on line 171

Warning: fclose() expects parameter 1 to be resource, boolean given in /home/gowithme/public_html/lmhp/wp-content/plugins/user-sync/user-sync.php on line 172

Warning: fopen(/home/gowithme/public_html/lmhp/wp-content/plugins/user-sync/log/errors_s.log): failed to open stream: No such file or directory in /home/gowithme/public_html/lmhp/wp-content/plugins/user-sync/user-sync.php on line 169

Warning: fwrite() expects parameter 1 to be resource, boolean given in /home/gowithme/public_html/lmhp/wp-content/plugins/user-sync/user-sync.php on line 171

Warning: fclose() expects parameter 1 to be resource, boolean given in /home/gowithme/public_html/lmhp/wp-content/plugins/user-sync/user-sync.php on line 172

Warning: Cannot modify header information - headers already sent by (output started at /home/gowithme/public_html/lmhp/wp-content/plugins/user-sync/user-sync.php:169) in /home/gowithme/public_html/lmhp/wp-includes/pluggable.php on line 1167

No log files were created on either site.