Call to a member function out() on null

[security-companion]

Hi,
when accesing on my moodle site the /my/ sub-site I get an error "Call to a member function out() on null".

Somewhere I read about uninstalling the block_analytics_graphs plugin, I didn't have it installed. Instead I had installed a plugin called tool_analytics which I uninstalled but the problem persists.

I'm using Moodle 3.11.2 (Build: 20210729)

I activated debug-output, see following paste. Any hints about what to do?

Notice: Undefined offset: 23 in /home/ftuyt/public_html/blocks/assignments/block_assignments.php on line 108

Notice: Trying to get property 'id' of non-object in /home/ftuyt/public_html/blocks/assignments/block_assignments.php on line 109

Notice: Undefined offset: 23 in /home/ftuyt/public_html/blocks/assignments/block_assignments.php on line 112

Notice: Trying to get property 'id' of non-object in /home/ftuyt/public_html/blocks/assignments/block_assignments.php on line 113

Notice: Trying to get property 'course' of non-object in /home/ftuyt/public_html/blocks/assignments/block_assignments.php on line 114

Notice: Undefined index: in /home/ftuyt/public_html/blocks/assignments/block_assignments.php on line 114

Notice: Trying to get property 'id' of non-object in /home/ftuyt/public_html/blocks/assignments/block_assignments.php on line 123

Notice: Trying to get property 'id' of non-object in /home/ftuyt/public_html/blocks/assignments/block_assignments.php on line 123

Notice: Undefined index: in /home/ftuyt/public_html/blocks/assignments/block_assignments.php on line 123

Notice: Trying to access array offset on value of type null in /home/ftuyt/public_html/blocks/assignments/block_assignments.php on line 123

Error
Excepción - Call to a member function out() on null
Debug info:
Error code: generalexceptionmessage
Stack trace: * line 123 of /blocks/assignments/block_assignments.php: Error thrown

line 341 of /blocks/moodleblock.class.php: call to block_assignments->get_content()
line 235 of /blocks/moodleblock.class.php: call to block_base->formatted_contents()
line 1181 of /lib/blocklib.php: call to block_base->get_content_for_output()
line 1239 of /lib/blocklib.php: call to block_manager->create_block_contents()
line 645 of /lib/outputrenderers.php: call to block_manager->ensure_content_created()
line 603 of /theme/moove/classes/output/core_renderer.php: call to core_renderer->standard_head_html()
line 219 of /lib/mustache/src/Mustache/Context.php: call to theme_moove\output\core_renderer->standard_head_html()
line 138 of /lib/mustache/src/Mustache/Context.php: call to Mustache_Context->findVariableInStack()
line 31 of /home/ftuyt/moodledata/localcache/mustache/1630352672/moove/__Mustache_6b816cb648158c31a45c8a7cadad0ee4.php: call to Mustache_Context->findDot()
line 13 of /home/ftuyt/moodledata/localcache/mustache/1630352672/moove/__Mustache_ad102c022bb0a496eba4f47b1c9c5bbc.php: call to __Mustache_6b816cb648158c31a45c8a7cadad0ee4->renderInternal()
line 67 of /lib/mustache/src/Mustache/Template.php: call to __Mustache_ad102c022bb0a496eba4f47b1c9c5bbc->renderInternal()
line 198 of /lib/outputrenderers.php: call to Mustache_Template->render()
line 93 of /theme/moove/layout/mydashboard.php: call to renderer_base->render_from_template()
line 1396 of /lib/outputrenderers.php: call to include()
line 1326 of /lib/outputrenderers.php: call to core_renderer->render_page_layout()
line 165 of /my/index.php: call to core_renderer->header()