add faq for sl error (#4532)

adding an SL faq to help users unblock themselves when they encounter an
alpn error per [slack
thread](https://dbt-labs.slack.com/archives/C05K4R7KZ5Z/p1700674655839969?thread_ts=1700032248.113419&cid=C05K4R7KZ5Z)

website/docs/docs/dbt-cloud-apis/sl-jdbc.md

@@ -352,6 +352,8 @@ semantic_layer.query(metrics=['food_order_amount', 'order_gross_profit'],
 
 ## FAQs
 
+<FAQ path="Troubleshooting/sl-alpn-error" />
+
 - **Why do some dimensions use different syntax, like `metric_time` versus `[Dimension('metric_time')`?**<br />
 	When you select a dimension on its own, such as `metric_time` you can use the shorthand method which doesn't need the “Dimension” syntax. However, when you perform operations on the dimension, such as adding granularity, the object syntax `[Dimension('metric_time')` is required. 
 

website/docs/docs/use-dbt-semantic-layer/avail-sl-integrations.md

@@ -33,6 +33,7 @@ import AvailIntegrations from '/snippets/_sl-partner-links.md';
 - <span><a href="https://docs.getdbt.com/docs/dbt-cloud-apis/sl-api-overview" target="_self">{frontMatter.meta.api_name}</a></span> to learn how to integrate and query your metrics in downstream tools.
 - [dbt Semantic Layer API query syntax](/docs/dbt-cloud-apis/sl-jdbc#querying-the-api-for-metric-metadata) 
 - [Hex dbt Semantic Layer cells](https://learn.hex.tech/docs/logic-cell-types/transform-cells/dbt-metrics-cells) to set up SQL cells in Hex.
+- [Resolve 'Failed APN'](/faqs/Troubleshooting/sl-alpn-error) error when connecting to the dbt Semantic Layer.
 
 </VersionBlock>
 

website/docs/docs/use-dbt-semantic-layer/gsheets.md

@@ -54,10 +54,9 @@ To use the filter functionality, choose the [dimension](docs/build/dimensions) y
    - For categorical dimensiosn, type in the dimension value you want to filter by (no quotes needed) and press enter. 
    - Continue adding additional filters as needed with AND and OR. If it's a time dimension, choose the operator and select from the calendar. 
 
-
-
 **Limited Use Policy Disclosure**
 
 The dbt Semantic Layer for Sheet's use and transfer to any other app of information received from Google APIs will adhere to [Google API Services User Data Policy](https://developers.google.com/terms/api-services-user-data-policy), including the Limited Use requirements.
 
-
+## FAQs
+<FAQ path="Troubleshooting/sl-alpn-error" />

website/docs/docs/use-dbt-semantic-layer/tableau.md

@@ -80,3 +80,5 @@ The following Tableau features aren't supported at this time, however, the dbt S
 - Filtering on a Date Part time dimension for a Cumulative metric type
 - Changing your date dimension to use "Week Number"
 
+## FAQs
+<FAQ path="Troubleshooting/sl-alpn-error" />

website/docs/faqs/Troubleshooting/sl-alpn-error.md

@@ -0,0 +1,14 @@
+---
+title: I'm receiving an `Failed ALPN` error when trying to connect to the dbt Semantic Layer.
+description: "To resolve the 'Failed ALPN' error in the dbt Semantic Layer, create a SSL interception exception for the dbt Cloud domain."
+sidebar_label: 'Use SSL exception to resolve `Failed ALPN` error'
+---
+
+If you're receiving a `Failed ALPN` error when trying to connect the dbt Semantic Layer with the various [data integration tools](/docs/use-dbt-semantic-layer/avail-sl-integrations) (such as Tableau, DBeaver, Datagrip, ADBC, or JDBC), it typically happens when connecting from a computer behind a corporate VPN or Proxy (like Zscaler or Check Point). 
+
+The root cause is typically the proxy interfering with the TLS handshake as the dbt Semantic Layer uses gRPC/HTTP2 for connectivity. To resolve this:
+
+- If your proxy supports gRPC/HTTP2 but isn't configured to allow ALPN, adjust its settings accordingly to allow ALPN. Or create an exception for the dbt Cloud domain.
+- If your proxy does not support gRPC/HTTP2, add an SSL interception exception for the dbt Cloud domain in your proxy settings
+
+This should help in successfully establishing the connection without the Failed ALPN error.