Try below troubleshooting:

1) Press Win + I key then type Exploit protection and press Enter key.

2) Click Exploit protection. Setting window will appear.

3) Add webview2.exe program.

4) Configure the settings. Once completed, click [Apply].

5) Navigate to C:\Program Files\Grass Valley\Microsoft.WebView2.FixedVersionRuntime.

6) Open msedgewebview2.exe properties.

7) Select [Compatibility] and deactivate all options.

8) Restart the OS.

9) Run EDIUS.