Post-processing Canon EOS / PowerShot CR3 RAW files
The Canon Powershot SX70 HS, Canon EOS M50, EOS R / EOS RP / EOS R1 / EOS R3 / R5 (II) / R6 (II) / R7 / R8 / R10 and EOS 90D / EOS M6 Mark II uses the CR3 RAW / C-RAW file standard and therefore not compatible with Lightroom 5 / 6 / 7. All future Canon EOS and Canon Powershot cameras will probably also be CR3 RAW-enabled.
Update: All Canon EOS RP CR3 RAW files are now compatible with the latest editions of Lightroom
Minimum Intel Hardware for Lightroom Post-Processing
Canon EOS R6 First Impressions and Test Images (Processed from CR3 RAW to JPG) View>>
Canon EOS R First Impressions and Test Images (Processed from CR3 RAW to JPG) View>>
Minimum Intel Hardware for Lightroom Post-Processing
Canon EOS R6 First Impressions and Test Images (Processed from CR3 RAW to JPG) View>>
Canon EOS R First Impressions and Test Images (Processed from CR3 RAW to JPG) View>>
Canon Digital Photo Professional (DPP) Editing suite should be fully compatible with Canon CR3 / C-RAW files
More about Canon Digital Photo Professional 4.15.0 For Windows | Mac View