> For the complete documentation index, see [llms.txt](https://docs.aurelia.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.aurelia.io/developer-guides/error-messages/0151-to-0179.md).

# Expression Parser Errors

Errors 0151 to 0179 are @aurelia/expression-parser package related errors.

Please see below a reference to each [@aurelia/expression-parser](https://github.com/aurelia/aurelia/tree/master/packages/expression-parser/README.md) package related error with explanations and resources for debugging and solving.

## Parse Errors (0151-0179)

These errors occur during expression parsing in templates and binding expressions.

* [AUR0151](/developer-guides/error-messages/0151-to-0179/aur0151.md) - Invalid expression start
* [AUR0152](/developer-guides/error-messages/0151-to-0179/aur0152.md) - Spread operator not supported
* [AUR0153](/developer-guides/error-messages/0151-to-0179/aur0153.md) - Expected identifier
* [AUR0154](/developer-guides/error-messages/0151-to-0179/aur0154.md) - Invalid member expression
* [AUR0155](/developer-guides/error-messages/0151-to-0179/aur0155.md) - Unexpected end of expression
* [AUR0156](/developer-guides/error-messages/0151-to-0179/aur0156.md) - Unconsumed token
* [AUR0157](/developer-guides/error-messages/0151-to-0179/aur0157.md) - Invalid empty expression
* [AUR0158](/developer-guides/error-messages/0151-to-0179/aur0158.md) - Left-hand side not assignable
* [AUR0159](/developer-guides/error-messages/0151-to-0179/aur0159.md) - Expected converter identifier
* [AUR0160](/developer-guides/error-messages/0151-to-0179/aur0160.md) - Expected behavior identifier
* [AUR0161](/developer-guides/error-messages/0151-to-0179/aur0161.md) - Unexpected keyword "of"
* [AUR0162](/developer-guides/error-messages/0151-to-0179/aur0162.md) - Unexpected keyword "import"
* [AUR0163](/developer-guides/error-messages/0151-to-0179/aur0163.md) - Invalid identifier in for-of
* [AUR0164](/developer-guides/error-messages/0151-to-0179/aur0164.md) - Invalid object literal key
* [AUR0165](/developer-guides/error-messages/0151-to-0179/aur0165.md) - Unterminated string literal
* [AUR0166](/developer-guides/error-messages/0151-to-0179/aur0166.md) - Unterminated template string
* [AUR0167](/developer-guides/error-messages/0151-to-0179/aur0167.md) - Missing expected token
* [AUR0168](/developer-guides/error-messages/0151-to-0179/aur0168.md) - Unexpected character
* [AUR0170](/developer-guides/error-messages/0151-to-0179/aur0170.md) - Unexpected token in destructuring
* [AUR0171](/developer-guides/error-messages/0151-to-0179/aur0171.md) - Unexpected token in optional chain
* [AUR0172](/developer-guides/error-messages/0151-to-0179/aur0172.md) - Invalid tag in optional chain
* [AUR0173](/developer-guides/error-messages/0151-to-0179/aur0173.md) - Invalid arrow function parameters
* [AUR0174](/developer-guides/error-messages/0151-to-0179/aur0174.md) - Arrow function default parameters not supported
* [AUR0175](/developer-guides/error-messages/0151-to-0179/aur0175.md) - Arrow function destructuring not supported
* [AUR0176](/developer-guides/error-messages/0151-to-0179/aur0176.md) - Rest parameter must be last
* [AUR0177](/developer-guides/error-messages/0151-to-0179/aur0177.md) - Unsupported object binding pattern
* [AUR0178](/developer-guides/error-messages/0151-to-0179/aur0178.md) - Arrow function body not supported
* [AUR0179](/developer-guides/error-messages/0151-to-0179/aur0179.md) - Unexpected double dot


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