Help Center/ PanguLargeModels/ Best Practices/ Agent Application Practices/ Building AI Research Assistants Without Coding/ Typical Problems
Updated on 2025-11-19 GMT+08:00
View PDF
Share

Typical Problems

When building and running an AI research assistant workflow, you may encounter the following typical problems:

Problem 1: The Value of a Reference Parameter Is Empty

  • Symptom

    When an input parameter is file_url, and its type is set to ref, no result can be found in the corresponding value column.

  • Possible Cause

    file_url references the value of user_doc. However, user_doc is configured on the Start node. This node is not connected to the previous node. As a result, the reference fails and the value is empty.

  • Solution

    Connect the Plugin node (used for reading documents uploaded by users) and the Branch node (used for determining whether a user has uploaded a document).

Problem 2: The Error Message "template_content has wrong type or empty or unexpected reference" Displayed During Trial Run

  • Symptom

    During trial run, the error message "template_content has wrong type or empty or unexpected reference" is displayed on the LLM node.

  • Possible Cause

    You have copied the braces {{query}} preset in the template and manually entered the parameters in the braces. As a result, the parameter names in the result 1 and result 2 do not meet the requirements.

  • Solution

    Enter a left brace ({) and select the parameter displayed on the right.