Running out of application memory
I keep getting a box "Your system has run out of application memory", even when running NO applications. Makes doing anything very difficult!
Hardware Overview:
Model Name: MacBook Pro
Model Identifier: MacBookPro11,4
Processor Name: Intel Core i7
Processor Speed: 2.2 GHz
Number of Processors: 1
Total Number of Cores: 4
L2 Cache (per Core): 256 KB
L3 Cache: 6 MB
Hyper-Threading Technology: Enabled
Memory: 16 GB
Boot ROM Version: 426.0.0.0.0
SMC Version (system): 2.29f24
Serial Number (system): C02Q25GNG8WN
Hardware UUID: 5516E241-37EC-5E06-B210-0483A99D44CA
MacOs Mojave 10.14.16
MacBook, OS X 10.11