This may be due to a communication error occurred between the settings of the operating system and After Effects.
Solution for Mac Os:
1. Open the Terminal
2. Paste a line that matches the version of After Effects that is installed on your system:
For After Effects CC.2021 and above:
defaults write com.adobe.CSXS.11 PlayerDebugMode 1
For After Effects CC.2020:
defaults write com.adobe.CSXS.10 PlayerDebugMode 1
For After Effects CC.2019:
defaults write com.adobe.CSXS.9 PlayerDebugMode 1
For After Effects CC.2018:
defaults write com.adobe.CSXS.8 PlayerDebugMode 1
For After Effects CC.2017:
defaults write com.adobe.CSXS.7 PlayerDebugMode 1
For older versions:
defaults write com.adobe.CSXS.6 PlayerDebugMode 1
defaults write com.adobe.CSXS.5 PlayerDebugMode 1
3. Press Enter
4. Restart After Effects
Solution for Windows:
1. Download this archive and open it.
2. Run the reg file corresponding to the version of After Effects that is installed on your system.
3. In the pop-up window, click “OK”