# 81018: Template evaluation error in Studio widget

Log Type: APPLICATION

Log Level: WARNING

## Description

An error occurred when Studio tried to evaluate your template syntax.

### Possible causes

* The syntax used in your widget caused an error
* An array index referenced in your widget didn't exist at execution time
* Your Liquid curly braces are mismatched
* You used a `+` character in your template
* You have improperly assigned a variable
* You used a non-ASCII character in a variable name
* A tag or filter used in your template does not exist

### Possible solutions

* Check the syntax used in your widget (See Liquid docs [here](/docs/studio/user-guide/liquid-template-language))
* Verify the runtime data of your flow execution by checking the Flow Data and inspecting any variables you may have referenced
* Verify that your Liquid curly braces are matched
* Verify that all tags and filters used in your template are correct (The list of available filters is [here](/docs/studio/user-guide/liquid-template-language#standard-filters))
* Use only ASCII characters in variable names