Error when compiling sketch

I got this type of error while compiling, can anyone help?

panic: runtime error: invalid memory address or nil pointer dereference
[signal 0xc0000005 code=0x0 addr=0x0 pc=0x7855fb] goroutine 1 [running]:

As your compiler error is nothing to do with the old thread that you posted in, I’ve moved your post to a new topic.

I’d suggest that you provide lots of detailed information about the board, Blynk library version, ESP8288 or ESP32 core that you have installed, the type and version of the compiler that you’re using, and the code that you’re trying to compile.
When you post your code, please ensure that you add triple backticks at the beginning and end of the code.
triple backticks look like this:
```

Pete.