Error3 reports
Fix PrismaClientConstructorValidationError
in Prisma
✅ Solution
The "PrismaClientConstructorValidationError" often arises from incorrect Prisma Client initialization, especially after version upgrades. Verify that your Prisma Client constructor includes either the `adapter` option for adapter-based setups or the `accelerateUrl` option when using Prisma Accelerate, as required by your Prisma version, or for older versions, missing specific engine types altogether. Ensure the specified `engineType` in your schema and constructor options (like `client` or `binary`) is compatible and correctly configured in your `PrismaClient` constructor.
Related Issues
Real GitHub issues where developers encountered this error:
[7.0.1]: Your Prisma version is not supported by AccelerateNov 26, 2025
Prisma 7: PrismaClient fails to instantiate in ESM environment (TypeError: __internal undefined)Nov 22, 2025
Breaking changes with mysql adapter for prisma 7 - Using engine type "client" requires either "adapter" or "accelerateUrl" to be provided to PrismaClient constructor. Read more at https://pris.ly/d/clNov 22, 2025
Timeline
First reported:Nov 22, 2025
Last reported:Nov 26, 2025