diff --git a/cps/tasks/thumbnail.py b/cps/tasks/thumbnail.py
index 5bf0466b..e66da036 100644
--- a/cps/tasks/thumbnail.py
+++ b/cps/tasks/thumbnail.py
@@ -17,6 +17,7 @@
# along with this program. If not, see
Start Time: 2023-03-03 20:00:16
+Start Time: 2023-03-20 06:27:14
Stop Time: 2023-03-04 02:33:04
+Stop Time: 2023-03-20 13:00:29
Duration: 5h 37 min
+Duration: 5h 35 min
Traceback (most recent call last): + File "/home/ozzie/Development/calibre-web-test/test/test_backup_metadata.py", line 111, in test_backup_all + self.assertEqual(1, len(res)) +AssertionError: 1 != 0+
Traceback (most recent call last): + File "/home/ozzie/Development/calibre-web-test/test/test_backup_metadata.py", line 237, in test_backup_change_book_author + metadata = read_opf_metadata(meta_path) + File "/home/ozzie/Development/calibre-web-test/test/test_backup_metadata.py", line 21, in read_opf_metadata + with codecs.open(filename, "r", "utf-8") as f: + File "/usr/lib/python3.10/codecs.py", line 905, in open + file = builtins.open(filename, mode, buffering) +FileNotFoundError: [Errno 2] No such file or directory: '/home/ozzie/Development/Dokumente/tüst db/Frodo Beutlin/Der Buchtitel (1)/metadata.opf'+
Traceback (most recent call last): + File "/home/ozzie/Development/calibre-web-test/test/test_backup_metadata.py", line 337, in test_backup_change_book_description + metadata = read_opf_metadata(meta_path) + File "/home/ozzie/Development/calibre-web-test/test/test_backup_metadata.py", line 21, in read_opf_metadata + with codecs.open(filename, "r", "utf-8") as f: + File "/usr/lib/python3.10/codecs.py", line 905, in open + file = builtins.open(filename, mode, buffering) +FileNotFoundError: [Errno 2] No such file or directory: '/home/ozzie/Development/Dokumente/tüst db/Asterix Lionherd/comicdemo (3)/metadata.opf'+
Traceback (most recent call last): + File "/home/ozzie/Development/calibre-web-test/test/test_backup_metadata.py", line 297, in test_backup_change_book_language + metadata = read_opf_metadata(meta_path) + File "/home/ozzie/Development/calibre-web-test/test/test_backup_metadata.py", line 21, in read_opf_metadata + with codecs.open(filename, "r", "utf-8") as f: + File "/usr/lib/python3.10/codecs.py", line 905, in open + file = builtins.open(filename, mode, buffering) +FileNotFoundError: [Errno 2] No such file or directory: '/home/ozzie/Development/Dokumente/tüst db/Asterix Lionherd/comicdemo (3)/metadata.opf'+
Traceback (most recent call last): + File "/home/ozzie/Development/calibre-web-test/test/test_backup_metadata.py", line 205, in test_backup_change_book_publisher + metadata = read_opf_metadata(meta_path) + File "/home/ozzie/Development/calibre-web-test/test/test_backup_metadata.py", line 21, in read_opf_metadata + with codecs.open(filename, "r", "utf-8") as f: + File "/usr/lib/python3.10/codecs.py", line 905, in open + file = builtins.open(filename, mode, buffering) +FileNotFoundError: [Errno 2] No such file or directory: '/home/ozzie/Development/Dokumente/tüst db/Frodo Beutlin/Der Buchtitel (1)/metadata.opf'+
Traceback (most recent call last): + File "/home/ozzie/Development/calibre-web-test/test/test_backup_metadata.py", line 260, in test_backup_change_book_publishing_date + metadata = read_opf_metadata(meta_path) + File "/home/ozzie/Development/calibre-web-test/test/test_backup_metadata.py", line 21, in read_opf_metadata + with codecs.open(filename, "r", "utf-8") as f: + File "/usr/lib/python3.10/codecs.py", line 905, in open + file = builtins.open(filename, mode, buffering) +FileNotFoundError: [Errno 2] No such file or directory: '/home/ozzie/Development/Dokumente/tüst db/Hector Goncalves/book9 (11)/metadata.opf'+
Traceback (most recent call last): + File "/home/ozzie/Development/calibre-web-test/test/test_backup_metadata.py", line 318, in test_backup_change_book_rating + metadata = read_opf_metadata(meta_path) + File "/home/ozzie/Development/calibre-web-test/test/test_backup_metadata.py", line 21, in read_opf_metadata + with codecs.open(filename, "r", "utf-8") as f: + File "/usr/lib/python3.10/codecs.py", line 905, in open + file = builtins.open(filename, mode, buffering) +FileNotFoundError: [Errno 2] No such file or directory: '/home/ozzie/Development/Dokumente/tüst db/Asterix Lionherd/comicdemo (3)/metadata.opf'+
Traceback (most recent call last): + File "/home/ozzie/Development/calibre-web-test/test/test_backup_metadata.py", line 166, in test_backup_change_book_seriesindex + metadata = read_opf_metadata(meta_path) + File "/home/ozzie/Development/calibre-web-test/test/test_backup_metadata.py", line 21, in read_opf_metadata + with codecs.open(filename, "r", "utf-8") as f: + File "/usr/lib/python3.10/codecs.py", line 905, in open + file = builtins.open(filename, mode, buffering) +FileNotFoundError: [Errno 2] No such file or directory: '/home/ozzie/Development/Dokumente/tüst db/Frodo Beutlin/Der Buchtitel (1)/metadata.opf'+
Traceback (most recent call last): + File "/home/ozzie/Development/calibre-web-test/test/test_backup_metadata.py", line 276, in test_backup_change_book_tags + metadata = read_opf_metadata(meta_path) + File "/home/ozzie/Development/calibre-web-test/test/test_backup_metadata.py", line 21, in read_opf_metadata + with codecs.open(filename, "r", "utf-8") as f: + File "/usr/lib/python3.10/codecs.py", line 905, in open + file = builtins.open(filename, mode, buffering) +FileNotFoundError: [Errno 2] No such file or directory: '/home/ozzie/Development/Dokumente/tüst db/Peter Parker/Very long extra super turbo cool tit (4)/metadata.opf'+
Traceback (most recent call last): + File "/home/ozzie/Development/calibre-web-test/test/test_backup_metadata.py", line 221, in test_backup_change_book_title + metadata = read_opf_metadata(meta_path) + File "/home/ozzie/Development/calibre-web-test/test/test_backup_metadata.py", line 21, in read_opf_metadata + with codecs.open(filename, "r", "utf-8") as f: + File "/usr/lib/python3.10/codecs.py", line 905, in open + file = builtins.open(filename, mode, buffering) +FileNotFoundError: [Errno 2] No such file or directory: '/home/ozzie/Development/Dokumente/tüst db/John Doe/Buuko (7)/metadata.opf'+
Traceback (most recent call last): + File "/home/ozzie/Development/calibre-web-test/test/test_backup_metadata.py", line 356, in test_backup_change_custom_bool + metadata = read_opf_metadata(meta_path) + File "/home/ozzie/Development/calibre-web-test/test/test_backup_metadata.py", line 21, in read_opf_metadata + with codecs.open(filename, "r", "utf-8") as f: + File "/usr/lib/python3.10/codecs.py", line 905, in open + file = builtins.open(filename, mode, buffering) +FileNotFoundError: [Errno 2] No such file or directory: '/home/ozzie/Development/Dokumente/tüst db/Asterix Lionherd/comicdemo (3)/metadata.opf'+
Traceback (most recent call last): + File "/home/ozzie/Development/calibre-web-test/test/test_backup_metadata.py", line 389, in test_backup_change_custom_float + metadata = read_opf_metadata(meta_path) + File "/home/ozzie/Development/calibre-web-test/test/test_backup_metadata.py", line 21, in read_opf_metadata + with codecs.open(filename, "r", "utf-8") as f: + File "/usr/lib/python3.10/codecs.py", line 905, in open + file = builtins.open(filename, mode, buffering) +FileNotFoundError: [Errno 2] No such file or directory: '/home/ozzie/Development/Dokumente/tüst db/Asterix Lionherd/comicdemo (3)/metadata.opf'+
Traceback (most recent call last): + File "/home/ozzie/Development/calibre-web-test/test/test_backup_metadata.py", line 422, in test_backup_change_custom_int + metadata = read_opf_metadata(meta_path) + File "/home/ozzie/Development/calibre-web-test/test/test_backup_metadata.py", line 21, in read_opf_metadata + with codecs.open(filename, "r", "utf-8") as f: + File "/usr/lib/python3.10/codecs.py", line 905, in open + file = builtins.open(filename, mode, buffering) +FileNotFoundError: [Errno 2] No such file or directory: '/home/ozzie/Development/Dokumente/tüst db/Asterix Lionherd/comicdemo (3)/metadata.opf'+
Traceback (most recent call last): + File "/home/ozzie/Development/calibre-web-test/test/test_backup_metadata.py", line 455, in test_backup_change_custom_rating + metadata = read_opf_metadata(meta_path) + File "/home/ozzie/Development/calibre-web-test/test/test_backup_metadata.py", line 21, in read_opf_metadata + with codecs.open(filename, "r", "utf-8") as f: + File "/usr/lib/python3.10/codecs.py", line 905, in open + file = builtins.open(filename, mode, buffering) +FileNotFoundError: [Errno 2] No such file or directory: '/home/ozzie/Development/Dokumente/tüst db/Asterix Lionherd/comicdemo (3)/metadata.opf'+
Traceback (most recent call last): + File "/home/ozzie/Development/calibre-web-test/test/test_backup_metadata.py", line 490, in test_upload_book + metadata = read_opf_metadata(meta_path) + File "/home/ozzie/Development/calibre-web-test/test/test_backup_metadata.py", line 21, in read_opf_metadata + with codecs.open(filename, "r", "utf-8") as f: + File "/usr/lib/python3.10/codecs.py", line 905, in open + file = builtins.open(filename, mode, buffering) +FileNotFoundError: [Errno 2] No such file or directory: '/home/ozzie/Development/Dokumente/tüst db/Noname 23/book9 (15)/metadata.opf'+