(fix) O3-3781: Custom Widgets throwing error when rendering.

[usamaidrsk]

Requirements

• This PR has a title that briefly describes the work done including the ticket number. If there is a ticket, make sure your PR title includes a conventional commit label. See existing PR titles for inspiration.
• My work conforms to the OpenMRS 3.0 Styleguide and design documentation.
• My work includes tests or is validated by existing tests.

Summary

Fix can not read from undefined Custom Widget.
A quick test, use this config, provided by Reagan on this slack thread

Screenshots

Related Issue

Other

https://openmrs.atlassian.net/browse/O3-3781

[vasharma05]

@usamaidrsk, the PR titles should be specific to user case, instead of technical issue/ improvement.
For this PR, the correct PR title will be: (fix) O3-3781: Custom Widgets throwing error when rendering.

Then the description will state the technical issue.

[vasharma05]

@usamaidrsk , please add a screenshot, @kazlaw can you please provide the configuration for adding a custom widget?
Thanks!

[kazlaw]

@usamaidrsk , please add a screenshot, @kazlaw can you please provide the configuration for adding a custom widget? Thanks!

@vasharma05 , @usamaidrsk something like this

"extensionSlots": {
      "patient-chart-summary-dashboard-slot": {
        "add": [
          "obs-by-encounter-widget#consultation"
        ],
        "order": [
          "obs-by-encounter-widget#consultation"
        ],
        "configure": {
          "obs-by-encounter-widget#consultation": {
            "title": "Motif de consultation",
            "showGraphByDefault": true,
            "encounterTypes": [
              "f9fdbe63-12b4-479f-b8fd-dcbfde6aa944"
            ],
            "Display conditions": {
              "privileges": [
                "Add Users"
              ]
            },
            "data": [
              {
                "label": "Motif de consultation",
                "concept": "0a061333-1611-45b3-8096-f7c339b4fdfc",
                "color": "blue"
              },
              {
                "label": "Duration",
                "concept": "d178d5cf-52c3-4722-bb12-5861daa2815c",
                "color": "green"
              },
              {
                "label": "Time Units",
                "concept": "d6593e37-b7a8-482b-856f-6f6a8db25508",
                "color": "green"
              }
            ],
            "table": {
              "pageSize": 6
            }
          }
        }
      }
    },

[brandones]

Putting the fix in, since it's kind of a no-brainer. Though fleshing out the associated PR documentation as requested is quite welcome. Thanks @usamaidrsk

The fix is trivial and very sensible, obviously the right thing to do