Envelope section failed and was skipped
When running the simulation, this part of it doenst generate results and says the following:
Envelope section failed and was skipped because: Optional not initialized. Detail on error follows.
["C:/Users/JGC/AppData/Local/Temp/OpenStudio.ba5456/resources/run/6-UserScript-0/mergedjob-1/user_script.rb:158:in eval'\nC:/Users/JGC/AppData/Local/Temp/OpenStudio.ba5456/resources/run/6-UserScript-0/mergedjob-1/resources/os_lib_reporting.rb:1608:in
block in envelope_section_section'\nC:/Users/JGC/AppData/Local/Temp/OpenStudio.ba5456/resources/run/6-UserScript-0/mergedjob-1/resources/os_lib_reporting.rb:1603:in each'\nC:/Users/JGC/AppData/Local/Temp/OpenStudio.ba5456/resources/run/6-UserScript-0/mergedjob-1/resources/os_lib_reporting.rb:1603:in
envelope_section_section'\n(eval):1:in block in run'\nC:/Users/JGC/AppData/Local/Temp/OpenStudio.ba5456/resources/run/6-UserScript-0/mergedjob-1/user_script.rb:158:in
eval'\nC:/Users/JGC/AppData/Local/Temp/OpenStudio.ba5456/resources/run/6-UserScript-0/mergedjob-1/user_script.rb:158:in block in run'\nC:/Users/JGC/AppData/Local/Temp/OpenStudio.ba5456/resources/run/6-UserScript-0/mergedjob-1/user_script.rb:153:in
each'\nC:/Users/JGC/AppData/Local/Temp/OpenStudio.ba5456/resources/run/6-UserScript-0/mergedjob-1/user_script.rb:153:in run'\nmergedjob-0/in.rb:387:in
'"]
What can I do???????? Please help
Maria