ReferenceError: currentLoop is not defined
Although very similar to ReferenceError: varName is not defined currentLoop and frameDur are key PsychoJS variables and this error indicates a compilation error.
The lines
var currentLoop;
var frameDur;
should appear above
async function updateInfo() {
currentLoop = psychoJS.experiment; // right now there are no loops
expInfo['date'] = util.MonotonicClock.getDateStr(); // add a simple timestamp
expInfo['expName'] = expName;
expInfo['psychopyVersion'] = '2024.2.4';
expInfo['OS'] = window.navigator.platform;
The most likely cause is JavaScript that is incompatible with PsychoJS, the risk of which can be reduced by using Auto → JS code components wherever possible.
For example, it appears that PsychoJS does not support optional chaining.
slider_value = document.querySelector('input[name="expectation"]:checked')?.value;
A clause of this type should should be replaced with simpler syntax.
let selectedInput = document.querySelector('input[name="expectation"]:checked');
let slider_value = selectedInput ? selectedInput.value : null;