Main options page: fatal error & missing submit button

We have WP multisites.

1) In child sites… in GeoDirectory main options page.. We’re getting fatal error and missing the submit button.
It’s related to Dummy data.
Fatal error: Call to undefined function geodir_autoinstall_admin_header() in …/wp-content/plugins/geodirectory/geodirectory-admin/admin_functions.php on line 2212
But no problem with parent site. Its showing up fine..

2) The main bug is once the geodirectory plugin is activated…users with editor role…cannot login to their respective dashboards…instead, they’re redirected to home page.

3) Error:
Warning: session_start(): The session id is too long or contains illegal characters, valid characters are a-z, A-Z, 0-9 and ‘-,’ in /home/holistic1234/public_html/holistichubwebsites/wp-content/plugins/geodirectory/geodirectory.php on line 31

Warning: session_start(): Cannot send session cookie – headers already sent by (output started at /home/holistic1234/public_html/holistichubwebsites/wp-content/plugins/geodirectory/geodirectory.php:31) in /home/holistic1234/public_html/holistichubwebsites/wp-content/plugins/geodirectory/geodirectory.php on line 31

Warning: session_start(): Cannot send session cache limiter – headers already sent (output started at /home/holistic1234/public_html/holistichubwebsites/wp-content/plugins/geodirectory/geodirectory.php:31) in /home/holistic1234/public_html/holistichubwebsites/wp-content/plugins/geodirectory/geodirectory.php on line 31

We had to deactivate the plugin, so you can’t see the problem. We use the Virtue Premium theme.

We REALLY like GeoDirectory, so we hope this can be addressed very quickly. We want to market the directory starting Aug. 1.

https://ww.wp.xz.cn/plugins/geodirectory/