When customizing an APP, the URL is always redirected to the main page when the search page is submitted

When customizing an APP, the URL is always redirected to the main page when the search page is submitted

export PYTHON_VER=python3.7
make apps
“PYTHON_VER is python3.7.”
“Python 3 module install via pip”
/opt/hue49/Makefile.vars:65: *** “Error: must have python development packages for python3.7. Could not find Python.h. Please install python3.7-devel or python3.7-dev”. Stop.