Cannot read properties of null (reading '__typename')

[NobleDraconian]

Currently, when trying to export or import a project, this tool errors with the following error:

Cannot read properties of null (reading '__typename')

[timrogers]

@NobleDraconian Thanks for reaching out! That's strange. Would you be able to re-run in verbose mode (--verbose) and share the full output from the CLI? Could you also confirm where you are migrating from and to?

[timrogers]

I've just released v0.4.3 which will produce better error messages in cases like this (see #94) - can I suggest that you upgrade before you try again?

[NobleDraconian]

Hi @timrogers! I updated the tool and ran the import command again. I was not able to reproduce the error I originally had, however I encountered another error:

[timrogers]

Hi @timrogers! I updated the tool and ran the import command again. I was not able to reproduce the error I originally had, however I encountered another error:

That's interesting 🤔 It seems like there is a bug with some field types or values.

I think that you should be able to see which project item it was trying to load if you look at the log output.

Would you be able to find that project item in the JSON file and send me the data to help me debug? You can email the address on my profile if you don't want to share it publicly.

[NobleDraconian]

@timrogers

Here's the json you requested:

    {
      "content": {
        "__typename": "Issue",
        "title": "Change towers instead of speeding up the timer depending on the amount of players who have completed the tower",
        "number": 519,
        "repository": {
          "nameWithOwner": "PhoenixEntertainment/Project-Walljump"
        }
      },
      "fieldValues": {
        "nodes": [
          {
            "__typename": "ProjectV2ItemFieldUserValue"
          },
          {
            "__typename": "ProjectV2ItemFieldRepositoryValue"
          },
          {
            "__typename": "ProjectV2ItemFieldLabelValue"
          },
          {
            "__typename": "ProjectV2ItemFieldMilestoneValue"
          },
          {
            "__typename": "ProjectV2ItemFieldTextValue",
            "text": "Change towers instead of speeding up the timer depending on the amount of players who have completed the tower",
            "field": {
              "id": "PVTF_lAHOAZPDDM4ACibEzgBd3QU",
              "name": "Title"
            }
          },
          {
            "__typename": "ProjectV2ItemFieldSingleSelectValue",
            "field": {
              "id": "PVTSSF_lAHOAZPDDM4ACibEzgBd3Qc",
              "name": "Status"
            },
            "optionId": "4f787606"
          }
        ],
        "totalCount": 6
      },
      "isArchived": false,
      "type": "ISSUE",
      "id": "PVTI_lAHOAZPDDM4ACibEzgBYGEk"
    },

[timrogers]

@NobleDraconian Thank you! In the log output, I think it should tell you which field value is was trying to load. Can you take a look at the logs again?

[NobleDraconian]

@timrogers Status was the field it errored on:

[timrogers]

@NobleDraconian Thanks! That's very strange. Would you be open to doing a Zoom call at some point to look into this? I'd like to debug, but it's hard in text form!

[NobleDraconian]

@timrogers Do you have a discord? Discord would probably be easier, but I can do zoom if needed.

[timrogers]

I'm afraid that I don't. Is it okay if I email you at the address on your profile?

[NobleDraconian]

@timrogers Yep, you are free to email me

[timrogers]

@NobleDraconian Sorry that we didn't get a chance to meet yet 😓 I'm on vacation this week, but I was wondering if you might be willing to try with the newly-released v0.6.0? --verbose mode will now log requests and responses, so you can see exactly what is happening under the hood, which might help us to understand this problem.

[NobleDraconian]

Hi @timrogers! Sorry for the late response, had holiday stuff going on.

I'll try the new release later today!

[timrogers]

I'm going to close this as I haven't heard back from you, but feel free to add a comment if you still need help.