TaskWiki crash 7

gistfile1.txt

In a new test.wiki, after modifying a TaskWiki header 
from == test | +test ==
to == test | test ==
and :w saving

"~/Documents/taskwiki-test.wiki" 7L, 249C
Error detected while processing function vimwiki_tasks#write..vimwiki_tasks#read:
line   23:
Task was not found in taskwarrior: * [ ] color.calendar colors default to general colors  #7e23c1f2-d824-afd9-2eb6-7c5a73a74d8c
Task was not found in taskwarrior: * [ ] test url http://taskwarrior.org  #ed210a2a-5dde-46cb-8cc6-abc6e03ced1a
Task was not found in taskwarrior: * [ ] update hledger to latest  #71f4401d-2e4c-4927-bb4e-82c1fca1d3b8
Task was not found in taskwarrior: * [ ] firefox plugin  #2c4f66c8-a3ee-4930-8cc9-15e2b413a1c6
Task was not found in taskwarrior: * [ ] pay Ryan JSP7 contribution  #f670b083-5a05-45f7-b84b-81efa6ef43da

and the ViewPort now looks like this;

== test | test ==
* [X] test theme !
* [X] call test
* [ ] color.calendar colors default to general colors   TASK_NOT_FOUND
* [ ] test url http://taskwarrior.org   TASK_NOT_FOUND
* [ ] update hledger to latest   TASK_NOT_FOUND
* [ ] firefox plugin   TASK_NOT_FOUND
* [ ] pay Ryan JSP7 contribution   TASK_NOT_FOUND
* [X] call teksavvy re line quality

from the cli;
djp@cutter:~/.vim/bundle/taskwiki$ task test
[task limit list description ~ 'test']

ID Age  D Area      Project  Ø Tags          Dur   Description                                         Urg 
23 1.5y   community e.jsp      Ryan out       PT1H pay Ryan JSP7 contribution [1]                       7.7
49 1.3y   it        acct       online        PT30M update hledger to latest                             6.8
33 1.4y   it        tw.sync    extra feature       firefox plugin [2]                                   7.8
31 1.4y   it        tw.test  1                PT1H test url http://taskwarrior.org [2]                  6.9
 6 5.1y   it        tw.theme   bug                 color.calendar colors default to general colors [4]  7.8

5 tasks
There are local changes.  Sync required.