diff --git a/frontend/src/scenes/data-warehouse/external/SourceModal.tsx b/frontend/src/scenes/data-warehouse/external/SourceModal.tsx
index 01e37ce384332..68ded8034f627 100644
--- a/frontend/src/scenes/data-warehouse/external/SourceModal.tsx
+++ b/frontend/src/scenes/data-warehouse/external/SourceModal.tsx
@@ -1,4 +1,4 @@
-import { LemonButton, LemonModal, LemonModalProps, Link } from '@posthog/lemon-ui'
+import { LemonButton, LemonModal, LemonModalProps } from '@posthog/lemon-ui'
 import { useActions, useValues } from 'kea'
 import { FEATURE_FLAGS } from 'lib/constants'
 import { featureFlagLogic } from 'lib/logic/featureFlagLogic'
@@ -79,26 +79,22 @@ function FirstStep(): JSX.Element {
 
         if (config.name === 'Stripe') {
             return (
-                <LemonButton onClick={onClick} className="w-full" center type="secondary">
+                <LemonButton onClick={onClick} fullWidth center type="secondary">
                     <img src={stripeLogo} alt="stripe logo" height={50} />
                 </LemonButton>
             )
         }
         if (config.name === 'Hubspot') {
             return (
-                <div className="w-full">
-                    <Link to={addToHubspotButtonUrl() || ''}>
-                        <LemonButton className="w-full" center type="secondary">
-                            <img src={hubspotLogo} alt="hubspot logo" height={45} />
-                        </LemonButton>
-                    </Link>
-                </div>
+                <LemonButton fullWidth center type="secondary" to={addToHubspotButtonUrl() || ''}>
+                    <img src={hubspotLogo} alt="hubspot logo" height={45} />
+                </LemonButton>
             )
         }
 
         if (config.name === 'Postgres' && featureFlags[FEATURE_FLAGS.DATA_WAREHOUSE_POSTGRES_IMPORT]) {
             return (
-                <LemonButton onClick={onClick} className="w-full" center type="secondary">
+                <LemonButton onClick={onClick} fullWidth center type="secondary">
                     Postgres
                 </LemonButton>
             )
diff --git a/posthog/temporal/data_imports/external_data_job.py b/posthog/temporal/data_imports/external_data_job.py
index 17be75e9ee444..b9a12ade6b236 100644
--- a/posthog/temporal/data_imports/external_data_job.py
+++ b/posthog/temporal/data_imports/external_data_job.py
@@ -205,7 +205,7 @@ async def run_external_data_job(inputs: ExternalDataJobInputs) -> None:
             user=user,
             password=password,
             database=database,
-            sslmode="prefer" if settings.TEST else "require",
+            sslmode="prefer" if settings.TEST or settings.DEBUG else "require",
             schema=schema,
             table_names=inputs.schemas,
         )
diff --git a/posthog/warehouse/api/external_data_source.py b/posthog/warehouse/api/external_data_source.py
index d7d2deb1b9452..6078e9d8cd6da 100644
--- a/posthog/warehouse/api/external_data_source.py
+++ b/posthog/warehouse/api/external_data_source.py
@@ -232,7 +232,7 @@ def _handle_postgres_source(self, request: Request, *args: Any, **kwargs: Any) -
         schema = payload.get("schema")
         table_names = payload.get("schemas")
 
-        if self._validate_postgres_host(host, self.team_id):
+        if not self._validate_postgres_host(host, self.team_id):
             raise InternalPostgresError()
 
         new_source_model = ExternalDataSource.objects.create(
@@ -322,7 +322,7 @@ def reload(self, request: Request, *args: Any, **kwargs: Any):
     def database_schema(self, request: Request, *arg: Any, **kwargs: Any):
         host = request.query_params.get("host")
         port = request.query_params.get("port")
-        database = request.query_params.get("database")
+        database = request.query_params.get("dbname")
 
         user = request.query_params.get("user")
         password = request.query_params.get("password")
diff --git a/posthog/warehouse/api/test/test_external_data_source.py b/posthog/warehouse/api/test/test_external_data_source.py
index 13f7f91e6d6d3..43bce4e965336 100644
--- a/posthog/warehouse/api/test/test_external_data_source.py
+++ b/posthog/warehouse/api/test/test_external_data_source.py
@@ -171,7 +171,7 @@ def test_internal_postgres(self, patch_get_postgres_schemas):
                 data={
                     "host": "172.16.0.0",
                     "port": int(settings.PG_PORT),
-                    "database": settings.PG_DATABASE,
+                    "dbname": settings.PG_DATABASE,
                     "user": settings.PG_USER,
                     "password": settings.PG_PASSWORD,
                     "schema": "public",
@@ -187,7 +187,7 @@ def test_internal_postgres(self, patch_get_postgres_schemas):
                 data={
                     "host": "172.16.0.0",
                     "port": int(settings.PG_PORT),
-                    "database": settings.PG_DATABASE,
+                    "dbname": settings.PG_DATABASE,
                     "user": settings.PG_USER,
                     "password": settings.PG_PASSWORD,
                     "schema": "public",
@@ -203,7 +203,7 @@ def test_internal_postgres(self, patch_get_postgres_schemas):
                 data={
                     "host": "172.16.0.0",
                     "port": int(settings.PG_PORT),
-                    "database": settings.PG_DATABASE,
+                    "dbname": settings.PG_DATABASE,
                     "user": settings.PG_USER,
                     "password": settings.PG_PASSWORD,
                     "schema": "public",
@@ -219,7 +219,7 @@ def test_internal_postgres(self, patch_get_postgres_schemas):
                 data={
                     "host": "172.16.0.0",
                     "port": int(settings.PG_PORT),
-                    "database": settings.PG_DATABASE,
+                    "dbname": settings.PG_DATABASE,
                     "user": settings.PG_USER,
                     "password": settings.PG_PASSWORD,
                     "schema": "public",
diff --git a/posthog/warehouse/models/external_data_schema.py b/posthog/warehouse/models/external_data_schema.py
index fcef4ae7736ba..4f882ff97ed72 100644
--- a/posthog/warehouse/models/external_data_schema.py
+++ b/posthog/warehouse/models/external_data_schema.py
@@ -55,7 +55,7 @@ def get_postgres_schemas(host: str, port: str, database: str, user: str, passwor
         dbname=database,
         user=user,
         password=password,
-        sslmode="prefer" if settings.TEST else "require",
+        sslmode="prefer" if settings.TEST or settings.DEBUG else "require",
     )
 
     with connection.cursor() as cursor: