: Check your package.json or NuGet references. If your packages are v27.1.x , your license key must be generated specifically for v27.1.x .
When to Contact Vendor Support If the preceding steps fail, contact Syncfusion support with: syncfusion trial license key fix
I notice you're asking about a "Syncfusion trial license key fix" — this raises some concerns, as it could imply trying to bypass or extend a trial license improperly. : Check your package
Tip: Check your package.json or .csproj file to confirm your exact version. 3. The "Fix": Registering the Key Correctly syncfusion trial license key fix