build error: initializer-string for array of chars is too long

[DhruvaG2000]

When I try to build the source code in Main on PIO, I get the following error:

In file included from src\main.cpp:17:0:
src\secrets.h:6:19: error: initializer-string for array of chars is too long [-fpermissive]
 char network[2] = "GR";     // add 2 digit network code, eg GR
                   ^
src\secrets.h:7:19: error: initializer-string for array of chars is too long [-fpermissive]
 char station[5] = "GR002";  // add 5 digit station code, eg ST001