Error Conversion Api - Unable to Cast Object

Hi.
Since today, we’re encountering errors when attempting to convert TSV (csv) to XLSX using the API. Nothing has changed on our end, and we’re unsure what’s causing the issue.

Here’s an example of the error we’re seeing:
{
code: “internalError”,
dateTime: “2025-04-22T12:40:58.8524554Z”,
description: “Operation Failed. Internal error.”,
innerError: null,
message: “Internal error: Unable to cast object of type ‘\u0006\u0016\u000f’ to type ‘\u000e\u0015\u000f’.”
}

Any ideas on what could be going wrong?
Thanks,
Andi

Hi, I think this is because GroupDocs.Conversion Cloud was updated to v25.4 yesterday. Will check end respond soon

@andreas.hoeglinger
We have opened the following new ticket(s) in our internal issue tracking system and will deliver their fixes according to the terms mentioned in Free Support Policies.

Issue ID(s): CONVERSIONCLOUD-609