caUtils create-ngrams throws database exception "Out of range value for column 'seq'"

[arrlee]

Running the create-ngrams task of caUtils ends with an exception:

/var/www/providence/support/bin# ./caUtils create-ngrams
CollectiveAccess 2.0 (204/GIT) Utilities
(c) 2013-2025 Whirl-i-Gig

Processing 0102                                                                               2.0% 4423/254376 ETC: 04m:42s. Elapsed: 05s [|                              ]
Processing 0102000201020000000201000102028948484801000202010048020102010001000202020101530...2.0% 4424/254376 ETC: 04m:42s. Elapsed: 05s [|                              ]
Processing 111111111111111111111111111111111111111111111111111111111111111111                4.0% 10237/254376 ETC: 04m:22s. Elapsed: 11s [▩|                             ]
Processing 111111111111111111111111111111111111111111111111111111111111111111111111111111...4.0% 10238/254376 ETC: 04m:22s. Elapsed: 11s [▩|                             ]
Processing 46.00                                                                            18.0% 46469/254376 ETC: 04m:19s. Elapsed: 58s [▩▩▩▩▩|                         ]
Processing 46.0631980306938.91962412515646.0639238508798.91962412515646.0639238508798.92...18.0% 46470/254376 ETC: 04m:19s. Elapsed: 58s [▩▩▩▩▩|                         ]
Processing 46.80                                                                            18.0% 46509/254376 ETC: 04m:19s. Elapsed: 58s [▩▩▩▩▩|                         ]
Processing 46.8010724116529.812885446777146.8009989691299.815117686164746.8013478202219....18.0% 46510/254376 ETC: 04m:19s. Elapsed: 58s [▩▩▩▩▩|                         ]
Processing 47.4782725285728.3021869767226                                                   18.0% 46847/254376 ETC: 04m:21s. Elapsed: 59s [▩▩▩▩▩|                         ]
Processing 47.4813788315898.307278667577747.4816978687688.30739660558247.4816181096558.3...18.0% 46848/254376 ETC: 04m:21s. Elapsed: 59s [▩▩▩▩▩|                         ]
Processing 47.50                                                                            18.0% 46857/254376 ETC: 04m:21s. Elapsed: 59s [▩▩▩▩▩|                         ]
Processing 47.5019677412378.727194754896547.5019749892628.727194754896547.5019749892628....18.0% 46858/254376 ETC: 04m:21s. Elapsed: 59s [▩▩▩▩▩|                         ]PHP Fatal error:  Uncaught DatabaseException: Out of range value for column 'seq' at row 49 in /var/www/providence/app/lib/Db/mysqli.php:358
Stack trace:
#0 /var/www/providence/app/lib/Db/DbStatement.php(150): Db_mysqli->execute()
#1 /var/www/providence/app/lib/Db.php(261): DbStatement->executeWithParamsAsArray()
#2 /var/www/providence/app/lib/Utils/CLIUtils/Search.php(150): Db->query()
#3 /var/www/providence/support/bin/caUtils(171): CLIUtils::create_ngrams()
#4 {main}
  thrown in /var/www/providence/app/lib/Db/mysqli.php on line 358

I do have a lot of scanned and OCRed books (mostly the first pages including index). A large share of them are antique, so OCR does not work well every time. This might contribute to a lot of mangled words in the index.
My installation is based on providence 2.0.9

Thank you!