[FIX] server cache clean after detached instance error (should make the...

[FIX] server cache clean after detached instance error (should make the exception not critical anymore)

gargantext/util/http.py

@@ -32,6 +32,10 @@ def requires_auth(func):
             from gargantext.util.db import session
             session.rollback()
             print("=== session rollback ok!")
+            # re init the global cache (it must still have detached instances)
+            from gargantext.util.db_cache import cache
+            cache.clean_all()
+            print("=== cache reinit ok!")
             # and relogin for safety
             url = '/auth/login/?next=%s' % urlencode(request.path)
             return redirect(url)