id,summary,reporter,owner,description,type,status,priority,component,severity,resolution,keywords,cc,release 13535,AttributeError: type object 'Cell' has no attribute 'TYPE_STRING',Werner.Poschenrieder@…,Jun Omae,"when plugin is used in trac Python throws an exception then and trac reports: {{{ Trac detected an internal error: AttributeError: type object 'Cell' has no attribute 'TYPE_STRING' The call stack is: File ""build/bdist.win32/egg/trac/web/main.py"", line 647, in _dispatch_request File ""build/bdist.win32/egg/trac/web/main.py"", line 258, in dispatch File ""build/bdist.win32/egg/trac/web/main.py"", line 477, in _post_process_request File ""build/bdist.win32/egg/tracexceldownload/ticket.py"", line 421, in post_process_request File ""build/bdist.win32/egg/tracexceldownload/ticket.py"", line 464, in _convert_report File ""build/bdist.win32/egg/tracexceldownload/api.py"", line 368, in set_col_widths .. 367 from openpyxl.cell import Cell 368 TYPE_STRING = Cell.TYPE_STRING .. Local Variables Name Value Cell }}} I am absolutely new to Python however I may confirm that cell.py in my installation has an attribute `TYPE_STRING = 's'`. The trac installation is from Bitnami. openpyxl has been installed by easy_install {{{ System Information User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) Package Version Trac 1.2.3 Babel 0.9.6 Genshi 0.6 (without speedups) GIT 2.19.1.windows.1 mod_wsgi 3.5 (WSGIProcessGroup WSGIApplicationGroup %{GLOBAL}) pysqlite 2.6.3 Python 2.7.15 (v2.7.15:ca079a3ea3, Apr 30 2018, 16:22:17) [MSC v.1500 32 bit (Intel)] setuptools 20.9.0 SQLite 3.7.6.2 jQuery 1.11.3 jQuery UI 1.11.4 jQuery Timepicker 1.5.5 }}}",defect,closed,normal,ExcelDownloadPlugin,normal,fixed,,,1.2