Prisma 7 and better-auth error

Whenever I create a user account using Prisma 7 and better-auth, I get the following error on my server:

2025-12-03T06:19:41.870Z ERROR [Better Auth]: TypeError 279 | }
280 | function normalize_date(date) {
281 |   return date;
282 | }
283 | function normalize_timestamp(time) {
284 |   return `${time.replace(" ", "T")}+00:00`;
                  ^
TypeError: null is not an object (evaluating 'time.replace')

2025-12-03T06:19:41.870Z ERROR [Better Auth]: TypeError 279 | }
280 | function normalize_date(date) {
281 |   return date;
282 | }
283 | function normalize_timestamp(time) {
284 |   return `${time.replace(" ", "T")}+00:00`;
                  ^
TypeError: null is not an object (evaluating 'time.replace')

2025-12-03T06:19:41.870Z ERROR [Better Auth]: TypeError 279 | }
280 | function normalize_date(date) {
281 |   return date;
282 | }
283 | function normalize_timestamp(time) {
284 |   return `${time.replace(" ", "T")}+00:00`;
                  ^
TypeError: null is not an object (evaluating 'time.replace')

2025-12-03T06:19:41.870Z ERROR [Better Auth]: TypeError 279 | }
280 | function normalize_date(date) {
281 |   return date;
282 | }
283 | function normalize_timestamp(time) {
284 |   return `${time.replace(" ", "T")}+00:00`;
                  ^
TypeError: null is not an object (evaluating 'time.replace')

I found out that this error is coming from the @prisma/adapter-ppg package, but wondering what is calling this function? Maybe the better-auth adapter for Prisma?

I can't seem to find it why this is happening.

Does someone have any clue on how to fix this or what's the issue?

Thanks!

GitHub

prisma/packages/adapter-ppg/src/conversion.ts at main · prisma/prisma

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Prisma 7 and better-auth error

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