The block installs, but with the following errors coming up after placing the block on a page:

Warning: it's not recommended to use $text parameter in helpbutton ($page=, $module=block_helpdesk) function

• line 5951 of lib/weblib.php: call to debugging()
• line 182 of blocks/helpdesk/lib.php: call to helpbutton()
• line 105 of blocks/helpdesk/block_helpdesk.php: call to helpdesk_simple_helpbutton()
• line 317 of blocks/moodleblock.class.php: call to block_helpdesk->get_content()
• line 341 of blocks/moodleblock.class.php: call to block_base->is_empty()
• line 338 of lib/blocklib.php: call to block_base->_print_block()
• line 270 of index.php: call to blocks_print_group()