EQA2666E The .mdbg file for `compile_unit_name`, cannot be found. Use of the SET SOURCE command to indicate the location of the source file is not allowed at this time.

Explanation
A .mdbg file containing the source, debugging tables, or both is not available.

Programmer response
Make sure the .mdbg file for the program is available. If you know the location of the .mdbg
file, use the SET DEFAULT MDBG or SET MDBG command to specify the
location of the file.