using ssh-sftp updater i get undefined function submit_button()

I appear to be getting the following error when i try to activate a theme through the admin dashboard.

The issue appears to occur when attempting to install a theme that requires an activation step and the installation of other plugins and such.

I get the SSH Dialogue box, but it is full page and not in it’s usual windowed form but there is no submit button on the page…

this causes all admin links in the dashboard to show the ssh-sftp dialog page until the theme is renamed.

in my error log i see…

[root@REDACTED ssh-sftp-updater-support]# tail -f /var/log/httpd/error_log-REDACTED | grep button
[Wed Oct 10 10:45:39.918179 2018] [:error] [pid 102819] [client 70.53.113.169:54665] PHP Fatal error: Call to undefined function submit_button() in /home/REDACTED/public_html/wp-content/plugins/ssh-sftp-updater-support/sftp.php on line 255, referer: http://REDACTED.shadowplay.net/wp-admin/index.php

Also can i prefill in these values and expect it to automatically continue (without showing dialog window?)

// SFTP (SSH) details for automatic updates
define( ‘FTP_USER’, ‘someuser’ );
define( ‘FTP_PASS’, ‘SOMEPASS’);
define( ‘FTP_HOST’, ‘REDACTED.shadowplay.net:22’ );
define( ‘FS_METHOD’, ‘ssl2’ );

running

WP Version : 4.9.8
WPMU: No
MySQL Version : 5.5.60
WP Table Prefix : wp_
PHP Version : 5.6.38
Session Save Path : /var/lib/php/session
WP URL: http://REDACTED.shadowplay.net
Server Name : REDACTED.shadowplay.net
Cookie Domain : REDACTED.shadowplay.net
CURL Library Present : Yes
Debug File Write Permissions : Writable
PHP Version : 5.6.38
PHP Memory Usage: 27.66 MB
PHP Memory Limit : 256M
PHP Max Upload Size : 128M
PHP Max Post Size : 128M
PHP Allow URL fopen : On
PHP Allow URL Include : Off
PHP Display Errors : Off
PHP Max Script Execution Time : 30 Seconds

Name Version Plugin URL
Akismet Anti-Spam 4.0.8 https://akismet.com/
All In One WP Security 4.3.6 https://www.tipsandtricks-hq.com/wordpress-security-and-firewall-plugin
Easy WP SMTP 1.3.7 https://wp-ecommerce.net/easy-wordpress-smtp-send-emails-from-your-wordpress-site-using-a-smtp-server-2197
Google Captcha (reCAPTCHA) by BestWebSoft 1.37 https://bestwebsoft.com/products/wordpress/plugins/google-captcha/
SSH SFTP Updater Support 0.7.4 https://ww.wp.xz.cn/plugins/ssh-sftp-updater-support/
WP Maintenance Mode 2.2.1 https://designmodo.com/