Cannot load duplicator-tools.

I’m trying to migrate from one hosting provider to another using duplicator. The process appears to work, however on completing the setup and logging into the site, any attempt to access the duplicator settings give the error “Cannot load duplicator-tools.” I also found that some other aspects aren’t working, such as I can’t search for plugins using the search box, I have to format the URL by hand.

The only errors reported in the log are a handful of serialisation issues which I assume is specific to the posts.

* DUPLICATOR-LITE: INSTALL-LOG
* VERSION: 1.2.32
PHP VERSION:	5.6.33 | SAPI: litespeed
PHP TIME LIMIT:	[0] time limit restriction disabled
PHP MEMORY:	2048M | SUHOSIN: disabled
SERVER:		LiteSpeed
--------------------------------------
DATABASE ENVIRONMENT
--------------------------------------
MYSQL VERSION:	This Server: 10.1.24 -- Build Server: 5.5.51
FILE SIZE:	database.sql (7.44MB) - installer-data.sql (7.44MB)
--------------------------------------
DATA-REPLACE ERRORS (Serialization):
SELECT post_content, post_excerpt, post_password, to_ping, pinged, post_modified, post_modified_gmt, post_content_filtered, post_parent, guid, menu_order, post_mime_type, comment_count FROM <code>wp_posts</code>  WHERE ID = "96";
SELECT post_content, post_excerpt, post_password, to_ping, pinged, post_modified, post_modified_gmt, post_content_filtered, post_parent, guid, menu_order, post_mime_type, comment_count FROM <code>wp_posts</code>  WHERE ID = "101";
SELECT post_content, post_excerpt, post_password, to_ping, pinged, post_modified, post_modified_gmt, post_content_filtered, post_parent, guid, menu_order, post_mime_type, comment_count FROM <code>wp_posts</code>  WHERE ID = "102";
SELECT post_content, post_excerpt, post_password, to_ping, pinged, post_modified, post_modified_gmt, post_content_filtered, post_parent, guid, menu_order, post_mime_type, comment_count FROM <code>wp_posts</code>  WHERE ID = "103";
SELECT post_content, post_excerpt, post_password, to_ping, pinged, post_modified, post_modified_gmt, post_content_filtered, post_parent, guid, menu_order, post_mime_type, comment_count FROM <code>wp_posts</code>  WHERE ID = "124";

I’ve tried in safe mode and with SQLMODE: NO_ENGINE_SUBSTITUTION
The result is the same.

Any suggestions?