Error: the color components should all belong to [-1, 1]

[wakecarter]

Unfortunately this only really works when an error can be identified in your experiment’s JS file, rather than one of the PsychoJS files. Does the error happen straight away? If not, then can you work out what PsychoPy is trying to do at the point it crashes? That might narrow down which component to look at.

Print statements might help.

Wakefield's Daily Tips

Use Print statements When debugging, print statements can be very helpful to track down errors or unexpected behaviour. I tend to use them in one of two ways: print('trial setup started') Sometimes I won’t know where the error is, especially if there is a problem during the initial setup of the components or Begin experiment code. The components of each routine are set up in turn from top to bottom. Therefore, if you have a flow with routines called start, trial and finish and put print('tri…