Welcome to EasyEDA. Please read: [https://easyeda.com/forum/topic/How-to-ask-for-help-and-get-an-answer-71b17a40d15442349eaecbfae083e46a](https://easyeda.com/forum/topic/How-to-ask-for-help-and-get-an-answer-71b17a40d15442349eaecbfae083e46a)<br> <br> and the documents that it links to, in particular the Simulation Tutorial. Then post back with sufficient information upon which to base a more helpful reply.

You are using a symbol: 1. from the Schematic Symbol library instead of the Spice Symbol library and;  2. for a device for which there is no spice model associated. Note that a **ti**494 is an obsolete NPN bipolar transistor. There is a **TL**494 and an NCV494 PWM control chip neither of which have spice models available in the EasyEDA library.