Debug info:

Error code: ddltablenotexist

Stack trace:

    line 585 of /lib/dml/moodle_database.php: dml_exception thrown

    line 1828 of /lib/dml/moodle_database.php: call to moodle_database->where_clause()

    line 199 of /lib/adminlib.php: call to moodle_database->delete_records()

    line 847 of /lib/classes/plugin_manager.php: call to uninstall_plugin()

    line 99 of /admin/plugins.php: call to core_plugin_manager->uninstall_plugin()

Output buffer: <h2>block_xp</h2>

    adminlib.php

    // Delete scheduled tasks.

    $DB->delete_records('scheduled_task', array('component' => $pluginname));