Error Message -The Semantic Similarity activity

Getting Started with UiPath 20 Use Cases Learning Sprint
1

semantic similarity error
semantic similarity error577Ă—318 30.6 KB

Hi all, I am working on Agentic Automation Associate Training and I had this

error and no idea how to solve it, any solutions?
thanks

2

Hello @Marta_Lisicka check any “JSON input” or “Body” field.
If you used something like
{"text": "hello" "language": "en"}

then missing comma. Should be the reason

{"text": "hello", "language": "en"}
or if you’re dynamically building JSON then always use

Newtonsoft.Json.JsonConvert.SerializeObject(myObject)

instead of string concatenation.

Cheers

1 Like
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Option 1: Validate JSON Before Passing

If you are building JSON dynamically:

Use Newtonsoft.Json.JsonConvert.SerializeObject(object) to ensure proper formatting.

Example:

validJson = JsonConvert.SerializeObject(yourDictionaryOrObject)

Option 2: Escape Quotes in Strings

When including text or variables that might contain quotes or special characters, escape them:

escapedString = yourText.Replace(“”“”, “"”")

Option 3: Simplify Tool Input

If the agent or tool doesn’t require the entire object:

Pass only required fields.

Avoid large DataTables directly; use summarized or reference-based data (like file paths).

Option 4: Validate JSON via an Online Tool

Copy your JSON input into https://jsonlint.com
to confirm valid formatting before running the agent.

4

@Marta_Lisicka if the guidance from @bhavesh.choubey did not resolve your issue, can you send more details on the information that is being sent to Semantic Similarity?

5

Hey If it helped you then kindly close the thread by marking me as SOLUTION so that it can help others.

Thanks