Hey there Subramanian!
Looks like you're using ChronAm as your xml data source, but the LCCN coded xml file that you're looking for "2018270203" doesn't exist on the chroman servers (404).
There are a couple different possible reasons... 
* it could be that your batch " batch_nbu_2018sample_ver0001" is coded for the wrong LCCN.
* the batch that you've encoded isn't a "newspaper" by the standard for ChronAm (and, therefore, the title information in marc.xml format isn't on the ChronAm servers)
* some other cataloging error has occurred and resulted in the marc.xml not making it through oclc and/or loc to chroman

Some options:
* Correct your batch if the LCCN is wrong.
* Correct your title information through cataloging > oclc/loc
* Change your data source to use something other than the title information in loc. This is handled in ChronAm here:
    * If you're using OpenONI, this is handled with the MARC_RETRIEVAL_URLFORMAT variable. You can find that here: 

Hope that helps.

Best regards, +A

´╗┐On 3/22/19, 04:31, "Data, API, website, and code of the Chronicling America website on behalf of Subramanian Sadasivam" <[log in to unmask] on behalf of [log in to unmask]> wrote:

    We got below error when we try to load specific batch 
    [2019-03-18 20:33:52,953 INFO chronam.core.batch_loader] creating symlink /data3/ndnp/batch_nbu_2018sample_ver0001/ -> /opt/chronam/data/batches/batch_nbu_2018sample_ver0001
    [2019-03-18 20:33:52,953 INFO chronam.core.batch_loader] loading batch: batch_nbu_2018sample_ver0001
    [2019-03-18 20:33:53,306 INFO root] attempting to load marc record from;;sdata=945%2FFsV3j0dEIRe2AkyDlpQj1Bpp%2Ff0ibXFBtrOfsFY%3D&amp;reserved=0
    [2019-03-18 20:33:53,476 INFO chronam.core.title_loader] loading titles from:;;sdata=945%2FFsV3j0dEIRe2AkyDlpQj1Bpp%2Ff0ibXFBtrOfsFY%3D&amp;reserved=0
    [2019-03-18 20:33:55,156 ERROR chronam.core.batch_loader] unable to load batch: HTTP Error 404: NOT FOUND
    [2019-03-18 20:33:55,156 ERROR chronam.core.batch_loader] HTTP Error 404: NOT FOUND
    Traceback (most recent call last):
      File "/opt/chronam/core/", line 165, in load_batch
        issue = self._load_issue(mets_url)
      File "/opt/chronam/core/", line 262, in _load_issue
    Hence tried to load received new marc.xml file using below command but unable to load.
    $ load_titles /opt/chronam/data/lib/worldcat_titles/lccn/2018270203.xml
    Error message:
    [2019-03-21 13:24:52,963 INFO chronam.core.title_loader] loading titles from: /opt/chronam/data/bib/worldcat_titles/lccn/2018270203.xml
    [2019-03-21 13:24:53,031 ERROR chronam.core.title_loader] Code , not found in language table.
    [2019-03-21 13:24:53,099 INFO] indexing new titles
    Could you please suggest, this is only to specific  title and able to load remaining titles successfully without any issue. Could you please help us to fix the issue.