# Errors **URL:** https://community.omni.co/c/errors/11.md [Latest](https://community.omni.co/latest.md) · [Categories](https://community.omni.co/categories.md) · [Tags](https://community.omni.co/tags.md) --- ## [Error: "Failed to fetch"](https://community.omni.co/t/error-failed-to-fetch/452)
**Author:** [@James](https://community.omni.co/u/James)\ **Replies:** 0\ **Last updated:** [March 24, 2026, 9:15pm UTC](https://community.omni.co/t/error-failed-to-fetch/452 "2026-03-24T21:15:52Z")
If you’re seeing a “Failed to fetch” error, it typically means your browser briefly lost its connection to our servers. Why this happens In most cases, it’s caused by a short network interruption, such as: VPN usage: … --- ## [Omni MCP timeout](https://community.omni.co/t/omni-mcp-timeout/426)
**Author:** [@felipe.avelar](https://community.omni.co/u/felipe.avelar)\ **Replies:** 0\ **Last updated:** [November 21, 2025, 7:43am UTC](https://community.omni.co/t/omni-mcp-timeout/426 "2025-11-21T07:43:06Z")
Hello, I’m using your MCP to retrieve data from Omni, but there is a fixed 30s timeout on it… Is there any way to change this configuration? Best regards --- ## [Issue there is not such direct join](https://community.omni.co/t/issue-there-is-not-such-direct-join/332)
**Author:** [@AdrianaVela](https://community.omni.co/u/AdrianaVela)\ **Replies:** 2\ **Last updated:** [June 5, 2025, 7:41am UTC](https://community.omni.co/t/issue-there-is-not-such-direct-join/332 "2025-06-05T07:41:03Z")
Hi, does anybody know what is this error about? I got this after I did the join between the tables and added to the topic. Any help? --- ## [How to debug #ERROR in table calculations](https://community.omni.co/t/how-to-debug-error-in-table-calculations/320)
**Author:** [@James](https://community.omni.co/u/James)\ **Replies:** 0\ **Last updated:** [May 2, 2025, 3:59pm UTC](https://community.omni.co/t/how-to-debug-error-in-table-calculations/320 "2025-05-02T15:59:11Z")
Omni supports 1:1 excel syntax in writing table calculations. \[1\] There may be cases where some formulas displays an error due to syntax or other limitations on query structure. Generally more info regarding that calcul… --- ## [Issue Connecting MySql to Omni](https://community.omni.co/t/issue-connecting-mysql-to-omni/266)
**Author:** [@sam\_p](https://community.omni.co/u/sam_p)\ **Replies:** 3\ **Last updated:** [March 14, 2025, 4:54am UTC](https://community.omni.co/t/issue-connecting-mysql-to-omni/266 "2025-03-14T04:54:39Z")
I’ve been trying to connect OMNI to MySQL but I think the documentation is for MySQL prior to 9.0 because the internet is saying you cannot GRANT permissions in the newest version of MySQL. Has anyone else had the same i… --- ## [Why am I getting the error: “WORKBOOK models with changes to topics are restricted”?](https://community.omni.co/t/why-am-i-getting-the-error-workbook-models-with-changes-to-topics-are-restricted/40)
**Author:** [@conner](https://community.omni.co/u/conner)\ **Replies:** 0\ **Last updated:** [April 16, 2024, 9:36pm UTC](https://community.omni.co/t/why-am-i-getting-the-error-workbook-models-with-changes-to-topics-are-restricted/40 "2024-04-16T21:36:36Z")
If you’re seeing this error when viewing a chart on a dashboard, a few things are likely happening: You have Viewer permissions in Omni (permissions docs). The queries on that dashboard are not built off a “predefined … --- ## [Why am I getting the error: “Joins fan out the data without a primary key”?](https://community.omni.co/t/why-am-i-getting-the-error-joins-fan-out-the-data-without-a-primary-key/37)
**Author:** [@conner](https://community.omni.co/u/conner)\ **Replies:** 0\ **Last updated:** [April 10, 2024, 11:51pm UTC](https://community.omni.co/t/why-am-i-getting-the-error-joins-fan-out-the-data-without-a-primary-key/37 "2024-04-10T23:51:15Z")
How to fix the error If you define your table’s primary key, that should resolve the error! A table’s primary key is a column that contains a unique identifier per row — usually, it’s an ID column. There are 2 ways to … --- ## [Why am I seeing the error "Can't Display Chart: queries without a topic specified are restricted"](https://community.omni.co/t/why-am-i-seeing-the-error-cant-display-chart-queries-without-a-topic-specified-are-restricted/105)
**Author:** [@anika](https://community.omni.co/u/anika)\ **Replies:** 0\ **Last updated:** [June 17, 2024, 8:13pm UTC](https://community.omni.co/t/why-am-i-seeing-the-error-cant-display-chart-queries-without-a-topic-specified-are-restricted/105 "2024-06-17T20:13:47Z")
For Non-Admins: If you are seeing this error, your user account likely has the Restricted Querier or Viewer role, which restrict access to pre-defined Topics in Omni, and the query in question was built outside of one of… --- ## [What does the error "Failed to execute 'send' on 'XMLHttpRequest': Failed to load 'https://extensions.duckdb.org/v0.10.0/wasm\_eh/icu.duckdb\_extension.wasm'." mean?](https://community.omni.co/t/what-does-the-error-failed-to-execute-send-on-xmlhttprequest-failed-to-load-https-extensions-duckdb-org-v0-10-0-wasm-eh-icu-duckdb-extension-wasm-mean/101)
**Author:** [@jack](https://community.omni.co/u/jack)\ **Replies:** 0\ **Last updated:** [June 11, 2024, 3:46am UTC](https://community.omni.co/t/what-does-the-error-failed-to-execute-send-on-xmlhttprequest-failed-to-load-https-extensions-duckdb-org-v0-10-0-wasm-eh-icu-duckdb-extension-wasm-mean/101 "2024-06-11T03:46:19Z")
This error means that DuckDB was unable to load in the browser. This commonly happens when something is blocking DuckDB from loading its extensions. It is recommended to check the network that you’re on to determine i…