forrtl severe 174 SIGSEGV segmentation fault occurred

This error message indicates that a program has attempted to access a memory location that it is not allowed to access, resulting in a segmentation fault. This can occur due to a variety of reasons, such as accessing an uninitialized pointer, writing to an array beyond its bounds, or attempting to execute data as code. To resolve this error, the program code needs to be carefully examined and debugged to identify the source of the problem and fix it.