I tried removing the cache plugin and resetting the browser history, but kept getting the same error. However, I’ve found a work-around – I replaced the logo.png, logo-w.png, logo-2x.png and logo-w2x.png files in the /docly/assets/img folder. I know this is not ideal but it’ll do for now. However, I would love to know how to solve the original problem. Thank you anyway.