Crash in the GaphQL request

### Describe the problem you discovered

On the testnet, the following request return an error

query {
networkTransactions(page:${page}, type:"hosting") {
address
chainLength
validationStamp {
timestamp
}
data {

content
}
type

}
}

If you remode data / content, the request is ok

It seems that one content provide the crash

### Describe the solution you'd like

The invalid content is correctly manages

### Epic

_No response_

Reproduce the reported testnet GraphQL query, focusing on the networkTransactions entry point and the nested data.content field. Identify which transaction content triggers the crash and verify that the same request completes while invalid content is handled safely.

Written by the indexing model from the issue text.