There are couple of issues with running plugin on Postgres.
SQLSTATE[23502]: Not null violation: 7 ERROR: null value in column "hitCount" violates not-null constraint DETAIL: Failing row contains (1, null, a, a, 301, null, null, 2017-08-03 16:33:19, 2017-08-03 16:33:19, null, e5f0ac1a-913f-4410-be29-49965fa54a7e). The SQL being executed was: INSERT INTO "dolphiq_redirects" ("sourceUrl", "destinationUrl", "statusCode", "dateCreated", "uid", "dateUpdated") VALUES ('a', 'a', '301', '2017-08-03 16:33:19', 'e5f0ac1a-913f-4410-be29-49965fa54a7e', '2017-08-03 16:33:19') RETURNING "id"
ALTER TABLE "public"."dolphiq_redirects"
ALTER COLUMN "hitCount" DROP NOT NULL,
ALTER COLUMN "hitCount" SET DEFAULT '0';
SQLSTATE[42703]: Undefined column: 7 ERROR: column "hitcount" does not exist LINE 1: ..."dolphiq_redirects" SET "hitAt"=now(), "hitCount"=hitCount +...
^
HINT: Perhaps you meant to reference the column "dolphiq_redirects.hitCount". The SQL being executed was: UPDATE "dolphiq_redirects" SET "hitAt"=now(), "hitCount"=hitCount + 1, "dateUpdated"='2017-08-03 16:14:28' WHERE "id"=3