Instruments not showing any symbols

I'm only seeing a bunch of memory addresses in Instruments for an app I'm trying to profile. This was working fine before but suddenly stopped working after I updated to 11.2.1. Instruments > File > Symbols tells me:

Permission to profile this process was denied. Applications you wish to profile must be signed with a developer code..

I have no idea what I need to do to make this work. I've tried a few things, clean builds folder, switch to Debug from Release for profile but nothing works.

Nothing within the project settings have changed recently. It runs fine and is codesigned with our development profile.
Same issue here with Instruments 12.4.
In my case a workaround is to switch off System Integrity Protection.
Same problem. Tried restarting, deleting derived data, etc. No luck. Disabling SIP worked for me too, thanks for the tip.
Instruments not showing any symbols
 
 
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