_e: print instead of throwing error

shell/e.cpp

@@ -5,6 +5,7 @@
 
 #include <fmt/core.h>
 #include <optional>
+#include <fxos/util/log.h>
 
 //---
 // e
@@ -26,17 +27,16 @@ static _e_args parse_e(Session &session, Parser &parser)
     parser.accept_options();
 
     VirtualSpace *space;
-    if (!args.space_name.empty())
+    if(!args.space_name.empty())
         space = session.get_space(args.space_name);
     else
         space = session.current_space;
 
-    if (space)
+    if(space)
         while(!parser.at_end())
             args.values.push_back(parser.expr(space));
     else
-        throw CommandError("virtual space {} does not exist",
-                           args.space_name);
+        FxOS_log(ERR, "virtual space '%s' does not exist", args.space_name);
 
     // TODO: Error message when session specified in _e does not exist