Error binding parameter 0 - probably unsupported type.

[illmattic]

It is the value of mb_data that you need to find out what it is

Like this:

def data_entry():
    mb_data = mb['Value']
    mb_per = mb['Y/Y, (%)']
    m1_data = m1['Value']
    m1_per = m1['Y/Y, (%)']
    m2_data = m2['Value']
    m2_per = m2['Y/Y, (%)']
    print(f"Type mb_data: {type(mb_data)}")

Output:
Type mb_data: <class 'pandas.core.series.Series'>

Process finished with exit code 0