A CT error has popped up for this sim. I duplicated the problem locally, looked through the (wildly complicated) stack trace and found that the problem was occurring while the sim was starting up and trying to position a Scenery Node instance. Since I don't think I'd changed anything related to layout a while I thought I'd investigate common code. It looks like the error message itself was added recently in https://github.com/phetsims/axon/commit/96122725e6c20ec990f4407ea9bcc495b19f7b48. This commit was added by @samreid, assigning to him to investigate.
samreid
commented
10 months ago
A CT error has popped up for this sim. I duplicated the problem locally, looked through the (wildly complicated) stack trace and found that the problem was occurring while the sim was starting up and trying to position a Scenery Node instance. Since I don't think I'd changed anything related to layout a while I thought I'd investigate common code. It looks like the error message itself was added recently in https://github.com/phetsims/axon/commit/96122725e6c20ec990f4407ea9bcc495b19f7b48. This commit was added by @samreid, assigning to him to investigate.