Error Happens Although I Followed The Solution To Another Issue Here

[IDKWhatToName989]

These errors appear although I have python 3.14 downloaded and in my path:
Exception thrown at 0x0000000000000000 in hl2_win64.exe: 0xC0000005: Access violation executing location 0x0000000000000000.
identifier "StartSoundParams_t" is undefined
identifier "StartSoundParams_t" is undefined
identifier "StartSoundParams_t" is undefined
member function declared with 'override' does not override a base class member