Error 404 causing "Unknown error (mostly invalid http). Abort."

[anotherska]

Hi,

thanks for your great work on this Excel-Makro. I am using it on many projects without any issues. I recently discovered an error when trying to sync a new project: "Unknown error (mostly invalid http). Abort."

When tracking down this error I realized that the URL constructed https://"openprojectbasisurl"/op/api/v3//op/principles/... was causing an error 404. I am not sure if this is an error within the VBA code or with my used reverse proxy since I am using a subfolder named "op" and the "//op/" in the constructed URL seems to origin from this. I changed one line in the API to ignore 404 errors and the import went nicely: If Not .Status = 200 And Not .Status = 201 And Not .Status = 404 Then

Do you have any ideas what causes this behaiviour and how to fix it?

Thanks.

[bpetraus]

Hi @anotherska ,

unfortunately I dont have much experience with proxys. I did implement the feature for one particular request. That was my only test environment re. proxy.

Im still interested in your case. Since your issue is quite old (sorry for responding that late), have you found out anything new?

Best

Bernd

[anotherska]

Hi Bernd,

thanks for your reply. I am currently busy with other things and have not been working further on this issue. I plan to migrate the server soon to another system using another proxying. I will report if the issue can be reproduced on the new system.

Kind regards, Sören