Update highcharts_core/chart.py

Co-authored-by: Chris Modzelewski <123704219+hcpchris@users.noreply.github.com>

Author: jmishra01

highcharts_core/chart.py

@@ -340,7 +340,7 @@ def to_js_literal(self,
         suffix = """});"""
         as_str = prefix + as_str + '\n' + suffix
 
-        if filename and validators.path(filename):
+        if validators.path(filename, allow_empty = True):
             with open(filename, 'w', encoding = encoding) as file_:
                 file_.write(as_str)