The formatTraceback function relies on _t to add the error message to tracebacks, it was recently moved around while refactoring but it seems that its dependency was forgotten and not imported. This causes the attempt to call _t to crash, which will try to format the error, which will again try to call _t and crash, until the browser itself crashes. This commit fixes that issue by adding the required import. closes odoo/odoo#67079 Signed-off-by: Géry Debongnie (ged) <ged@openerp.com>