crypto.randomUUID() will fail, if SDFX launched not on localhost.

[morgan55555]

PromptTimeline.vue is using crypto.randomUUID() for uuid generation. Using crypto.randomUUID() work on https-sites, but cannot be used on http-sites (except localhost), because crypto is undefined there. It's better to use uuidv4() from 'uuid' package (which already used by this project).