Fv0c Ttree not found while analysing with run3 input data file

Hi Experts,

When I used Run3 data it gave me an error on the parts related to V0C. I am stuck at an error saying: [ERROR] Exception caught: Couldn't get TTree "DF_2171849081801868/O2fv0c" from "AO2D.root". What is the proper helper task for O2fv0c?

Thanks in advance :smiling_face:.


did you got your answer in the meantime? If not, then this is related to one of your other tasks you are using . Some of the tasks are by default set to Run2 data and you have to configure them manually.

For example, I got this error when I wanted to use multiplicity tables. What I had to do was to create a json file which contains

“multiplicity-table”: {
“processRun2”: “false”,
“processRun3”: “true”

and then run the task with

o2-analysis-multiplicity-table --configuration json://name-of-your-file.json

It can be you need to run more tasks, so make sure all of them are configured to Run3

Hope it helped

Thank you for your answer. I truly appreciate your help. PS. - I have solved the problem in the meantime.