Same error type....different install. Only 20 minutes after installation.
{"MESSAGE_BODY":"\t<form id=\"acp_portal_modules\" method=\"post\" action=\".\/..\/adm\/index.php?i=-board3-portal-acp-portal_module&sid=a7d6c6dc3c9d0a5a9db9f0a15cc11283&mode=modules\">\n\t\t<fieldset>\n\t\t\t<dl>\n\t\t\t\t<dt><label for=\"module_classname\" style=\"display: inline;\">Choose module:<\/label><br \/><span>Choose a module from the drop-down list<\/span><\/dt>\n\t\t\t\t<dd><select name=\"module_classname\" id=\"module_classname\"><option value=\"\\board3\\portal\\modules\\attachments\">Attachments<\/option><option value=\"\\board3\\portal\\modules\\custom\">Custom Block<\/option><option value=\"\\board3\\portal\\modules\\forumlist\">Forumlist<\/option><option value=\"\\board3\\portal\\modules\\announcements\">Global announcements<\/option><option value=\"\\board3\\portal\\modules\\news\">Latest news<\/option><option value=\"\\board3\\portal\\modules\\donation\">PayPal donations<\/option><option value=\"\\board3\\portal\\modules\\poll\">Poll<\/option><\/select><\/dd>\n\t\t\t<\/dl>\n\n\t\t\t<p class=\"submit-buttons\">\n\t\t\t\t<input class=\"button1\" type=\"submit\" id=\"submit\" name=\"submit\" value=\"Submit\" \/> \n\t\t\t\t<input class=\"button2\" type=\"reset\" id=\"reset\" name=\"reset\" value=\"Reset\" \/>\n\t\t\t\t<input type=\"hidden\" name=\"creation_time\" value=\"1525392589\" \/>\n<input type=\"hidden\" name=\"form_token\" value=\"5b1fe6412826ceb7e96b884d3bb40241187e5031\" \/>\n<input type=\"hidden\" name=\"add_column\" value=\"2\" \/>\n\n\t\t\t<\/p>\n\t\t<\/fieldset>\n\t<\/form>\n\n","MESSAGE_TITLE":"Add module","MESSAGE_TEXT":"Add module","YES_VALUE":"Submit","S_CONFIRM_ACTION":".\/..\/adm\/index.php?i=-board3-portal-acp-portal_module&sid=a7d6c6dc3c9d0a5a9db9f0a15cc11283&mode=modules","S_HIDDEN_FIELDS":"<input type=\"hidden\" name=\"add_column\" value=\"2\" \/>\n"}
CURRENT EXTENSIONS INSTALLED
Enabled Extensions
About us 2.1.2
Advanced BBCode Box 3.2.0
Advanced Profile Fields Pack 1.0.3
Ajax Base 2.0.0
AJAX Registration Check 1.0.1
AJAX Registration check 1.0.0
AJAX Userinfo 1.0.0
Annual Stars 1.0.2
Application Form 1.0.7
Auto Groups 2.0.0
Avatars on Memberlist 2.0.0
Ban Hammer 1.0.5
Birthday Cake 1.0.2
Board3 Portal 2.1.0
Upload Extensions 3.2.0-dev
Disabled Extensions
VigLink 1.0.3
I have tried PHP Version 5.5.38, 5.6.35, 7.0.29, 7.1.16, and 7.2.4 all with the same result. Cache has been cleared/deleted from server and browser as well as multiple fresh installs. I have used 2 versions of phpBB 3.2.2 original download from
https://www.phpbb.com and Auto-installer from my host.