Caused by: org.apache.avro.AvroRuntimeException: Malformed data. Length is negative: -7843832

[dkumarkartik]

org.apache.kafka.common.errors.SerializationException: Error deserializing Avro message for id 31
Caused by: org.apache.avro.AvroRuntimeException: Malformed data. Length is negative: -7843832

Getting this issue while deserializing avro msg with Generic record. while msg contain some special character. for
one type of schema. ex-

{
"op": "create",
"id": "test-l广告oc-378621",
"provenance": {
"sourceDatasetId": "TEST"
},
"properties": {
"mg_display_label": "LOCA广告广告TION",
"mg_entity_type": "location"
},
"label": "location"
}

but same process for another schema not throwing any exception.
ex-
{
"op": "crea广告te",
"id": "test-ind-lc广告-372386213",
"provenance": {
"sourceDatasetId": "TEST"
},
"properties": {
"mg_display_label": "hasLocation",
"type": "home"
},
"src": {
"id": "test-ind-378621",
"label": "individual"
},
"dst": {
"id": "test-loc-378621",
"label": "location"
},
"label": "hasLocation"
}

what could be the reason,
Can anybody help me on this. stocked here from last couple of days.