undefined reference to `PCintPort::attachInterrupt(unsigned char, void (*)(), in

I am getting this error 'undefined reference to `PCintPort::attachInterrupt(unsigned char, void (*)(), int)' in my sketch and I have tried everything. The library that I am using right now is PinChangeInt.h.
Can anyone help me if they can?

Here is the piece of code that has the problem

PCintPort::attachInterrupt(RC_1, rcInterrupt1, CHANGE);
PCintPort::attachInterrupt(RC_2, rcInterrupt2, CHANGE);
PCintPort::attachInterrupt(RC_3, rcInterrupt3, CHANGE);
PCintPort::attachInterrupt(RC_4, rcInterrupt4, CHANGE);
PCintPort::attachInterrupt(RC_5, rcInterrupt5, CHANGE);

Thank you.

You are calling a function that does not exist. Perhaps you spelled it wrong. Look at the library documentation and examples to see the correct spelling and usage.

Can you share the code?

Don't worry I solved it, the answer was right in my face