Microsoft SQL Server 2014 (SP3-CU4-GDR) (KB5029185) - 12.0.6449.1 (Intel X86)
That's why I ask for the complete output.
Your SQL Server is X86 = 32 bit, you can not perform an inplace migration to SQL Server 64 bit, that's not possible.
Perform a side-by-side migration instead.