Failed to start streaming - NVENC Error: init_encoder: nvEncGetEncodePresetConfig failed: 15 (NV_ENC_ERR_INVALID_VERSION)

[bagz]

I am on the most recent version of OBS (25.0.8) and I cannot start streaming. When I try to, I get the error message above.
Here is an uploaded log file: https://obsproject.com/logs/R2-zMZDIQrNtSCdG

I've read other threads and tried their advice (e.g. updating drivers) but to no avail. Please help.

 

[R1CH]

Your nvidia driver 388.73 is many years old. Update it.

 

[bagz]

Your nvidia driver 388.73 is many years old. Update it.

Thanks