# Revision history [back]

### protobuf error for costom messages transport tutorial

I am new to the gazebo software and was working through the transport/custom messages tutorial. I have been able to get the main section of the code working si uit displays the world map. However, when I try to execute the request_publisher code it gives me this error:

How can I resolve this?

thanks

Tony

### protobuf error for costom custom messages transport tutorial

I am new to the gazebo software and was working through the transport/custom messages tutorial. I have been able to get the main section of the code working si uit displays the world map. However, when I try to execute the request_publisher code it gives me this error:

How can I resolve this?

thanks

Tony

 3 None chapulina 7474 ●2 ●23 ●54 https://louise.world/

### protobuf error for custom messages transport tutorial

I am new to the gazebo software and was working through the transport/custom messages tutorial. I have been able to get the main section of the code working si uit displays the world map. However, when I try to execute the request_publisher code it gives me this error:

[libprotobuf ERROR google/protobuf/descriptor_database.cc:57] File already exists in database: vector2d.proto