Error12 reports
Fix PrismaClientKnownRequestError
in Prisma
✅ Solution
PrismaClientKnownRequestError usually indicates a problem stemming from the Prisma Client attempting an operation that violates a database constraint (like a unique constraint), or experiencing an issue with connection parameters. Fix it by carefully examining the `code` property of the error object to identify the specific issue (e.g., P2002 for unique constraint violations) and adjust your Prisma Client code and database schema/connection URL accordingly, or upgrading to the latest prisma version for bug fixes. Also ensure your database connection string includes all necessary parameters, such as the schema if relevant.
Related Issues
Real GitHub issues where developers encountered this error:
`@prisma/adapter-pg` does not respect `?schema` in postgres connection url, while other functionalities doDec 26, 2025
PrismaClientKnownRequestError P2002 missing meta.target in primsa 7.xDec 22, 2025
Seeding not working when doing `tsx prisma/seed.ts` in v7Dec 2, 2025
[7] Prisma, Better-auth integration permission denied.Dec 1, 2025
PrismaClient seems to ignore ?schema= (defaults to 'public') in DB connection stringNov 28, 2025
Timeline
First reported:Sep 21, 2025
Last reported:Dec 26, 2025