ProtobufConverter is failing to convert protobuf messages

[koladilip]

I am getting following Error when using io.confluent.connect.protobuf.ProtobufConverter.

java.lang.VerifyError: Bad return type
Exception Details:
Location:
    io/confluent/protobuf/MetaProto$Meta.internalGetMapFieldReflection(I)Lcom/google/protobuf/MapFieldReflectionAccessor; @24: areturn
  Reason:
    Type 'com/google/protobuf/MapField' (current frame, stack[0]) is not assignable to 'com/google/protobuf/MapFieldReflectionAccessor' (from method signature)
  Current Frame:
    bci: @24
    flags: { }
    locals: { 'io/confluent/protobuf/MetaProto$Meta', integer }
    stack: { 'com/google/protobuf/MapField' }
  Bytecode:
    0000000: 1bab 0000 0000 0018 0000 0001 0000 0002
    0000010: 0000 0013 2ab7 0002 b0bb 000f 59bb 0010
    0000020: 59b7 0011 1212 b600 131b b600 14b6 0015
    0000030: b700 16bf
  Stackmap Table:
    same_frame(@20)
    same_frame(@25)

	at io.confluent.protobuf.MetaProto.<clinit>(MetaProto.java:1112)
	at io.confluent.kafka.schemaregistry.protobuf.ProtobufSchema.<clinit>(ProtobufSchema.java:246)
	at io.confluent.kafka.schemaregistry.protobuf.ProtobufSchemaProvider.parseSchemaOrElseThrow(ProtobufSchemaProvider.java:38)

Versions:
io.confluent:kafka-connect-protobuf-converter:7.7.1
com.google.protobuf:protobuf-java:3.25.4
com.google.protobuf:protoc:3.25.4
Java 17

[rayokota]

What is your version of kafka-protobuf-types?

[koladilip]

What is your version of kafka-protobuf-types?
7.7.1

[taer]

Getting a similar error when using protobuf 4.29.0

java.lang.VerifyError: Bad type on operand stack                                                                                                                                                              
Exception Details:                                                                                                                                                                                                                           
  Location:                                                                                                                                                                                                                                  
    io/confluent/kafka/schemaregistry/protobuf/ProtobufSchema.toMessage(Lcom/google/protobuf/DescriptorProtos$FileDescriptorProto;Lcom/google/protobuf/DescriptorProtos$DescriptorProto;)Lcom/squareup/wire/schema/internal/parser/MessageEle
ment; @679: invokestatic                                                                                                                                                                                                                     
  Reason:                                                                                                                                                                                                                                    
    Type 'com/google/protobuf/DescriptorProtos$MessageOptions' (current frame, stack[1]) is not assignable to 'com/google/protobuf/GeneratedMessageV3$ExtendableMessage'    

No error after reverting back to 3.25.5

[NemesisMate]

Possibly a duplicate of: #3047