"TypeError: Cannot read properties of undefined (reading 'map')" when comparing profiles

[eric-wieser]

I am trying to use the interface at https://profiler.firefox.com/compare/ to compare:

• https://profiler.firefox.com/public/smkc5ffh9318w177gps2x9e5b6wy117s6f18e6g/flame-graph/?globalTrackOrder=0&thread=0&transforms=ff-2659&v=10
• https://profiler.firefox.com/public/smkc5ffh9318w177gps2x9e5b6wy117s6f18e6g/flame-graph/?globalTrackOrder=0&thread=0&transforms=ff-2659&v=10

However, if I enter these URLs into the interface, I get the error:

Could not retrieve the profiles.

TypeError: Cannot read properties of undefined (reading 'map')

The full stack has been written to the Web Console.

Am I understanding the interface correctly? Or do I need to upload my json files somewhere and enter the URLs to those?

┆Issue is synchronized with this Jira Task

[mstange]

The frameTable in your profile doesn't have a category column. The compare code doesn't check for the presence of that column because our type definition of FrameTable has it as a non-optional column.