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There can be several issues related to getting type errors with AWS Lambda in Golang triggered by SQS. Here are some of them:

Data marshaling: When you send data to the SQS queue, it needs to be marshaled (serialized) into a string format. Similarly, when you receive data from the queue, it needs to be unmarshaled (deserialized) into the original format. If there is a mismatch between the marshaling and unmarshaling formats, it can cause type errors in your Lambda function.
Data validation: Even if the data is marshaled and unmarshaled correctly, it may not be in the expected format. For example, if you are expecting a JSON object with certain fields, but the data in the queue has missing or extra fields, it can cause type errors when you try to access those fields in your function.
Type conversion: When you receive data from the SQS queue, it is typically in string format. If you need to convert it to a different data type (e.g. int, bool, struct), you need to make sure that the conversion is valid. If the string cannot be converted to the desired type, it can cause type errors in your function.
Versioning: If you are using a versioned queue (i.e. with a queue URL that includes a version number), make sure that your Lambda function is compatible with that version. If the queue version changes and your function is not updated accordingly, it can cause type errors.
Binary data: If your SQS messages contain binary data (e.g. images, videos), make sure that you are properly encoding and decoding them. If the encoding/decoding is not done correctly, it can cause type errors in your function.