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Hope you are using the UART Component in your design to print Debug messages.
Increase the Heap size to 0x200 (under Design-Wide Resources System tab) and see if that resolves the issue.
if you are trying to print floating-point variables, then in project Build Settings -> Linker set "Use newlib-nano Float Formatting" to True.
Great thank you very much!!
Also remember to do this first:
// Disable IO buffering in libc to avoid putchar() bug
setvbuf(stdout, NULL, _IONBF, 0);