❓ PostgreSQL Insert Appears Stuck — No Error, Just Hanging / Deadlocking

INSERT INTO "KeywordInsight" (
    "keyword", "volume12m", "volume12mNL", "volume12mBE", "volumeLastMonth",
    "listings", "sponsoredListings", "medianPrice", "medianReview", "medianReviews", "extraFilterOptions"
) VALUES (
    'example keyword', 100, 50, 50, 10,
    200, 5, 29.99, 4.5, 25, '{}'
) ON CONFLICT ("keyword") DO NOTHING;

model KeywordInsight {
  id                 Int       @id @default(autoincrement())
  keyword            String    @unique

  volume12m          Int       @default(0)
  volume12mNL        Int       @default(0)
  volume12mBE        Int       @default(0)
  volumeLastMonth    Int       @default(0)
  listings           Int
  sponsoredListings  Int
  medianPrice        Float
  medianReview       Float
  medianReviews       Int
  extraFilterOptions String?   // JSON string (geëncodeerd), consistent met rest van systeem

  updatedAt          DateTime  @updatedAt
}