I working on making a report based on data from 19 other Google Sheets. I'm using QUERY but I'm kinda new to this and not sure if I'm doing it right or not.

I'm trying to use below but it seems somehow it's giving the above error. I can't find a workaround to it.

=QUERY({
 IMPORTRANGE("1TRKveEBEitHDkos3WX0pPI6WUVL1gHMzdIkeB6s-dJc", "Data!A1:DL");
 IMPORTRANGE("1FONS-hdcUXnLj4UMAsixLL1CVNfL_WdxMbs68ylsyaU", "Data!A1:DL");
 IMPORTRANGE("1pE4O-rO5Fg-AmjMGQlb_m2KbeMV1ZT4ylaE5qfT_aaQ", "Data!A1:DL");
 IMPORTRANGE("1fMyrxa3rxec_8CMOsl2qbLFqht8Z2_SjvShT-WJ-ld8", "Data!A1:DL");
 IMPORTRANGE("1SC8E_0Qg9zurGwl0NsisQZO1gJyimMLXvCxRaPrqjic", "Data!A1:DL");
 IMPORTRANGE("1rtRAf7T2lY_f_R95-L9B4Mn4sn2a9oVHLour-iJfNMM", "Data!A1:DL");
 IMPORTRANGE("1UhBnBRiqPWf444Eyk26hwTEg27ErNvCE2bviRdikLCI", "Data!A1:DL");
 IMPORTRANGE("1AVr4ZMOcTBCkUkI6AaO73B0N8AeiEWyHwhyt56iJYPo", "Data!A1:DL");
 IMPORTRANGE("1n4p51IPq7m4wgjJiMTHZCKDnoR5udxIwUGY1mgJ6kNo", "Data!A1:DL");
 IMPORTRANGE("1tomsqwtJE60j-AAmt5yWFmvHunQQYjVuQmPz0tAmx-s", "Data!A1:DL");
 IMPORTRANGE("1gsyd7m867UkX20Ueha4EqSc6Uc4pSzwc-fe-gYxey5c", "Data!A1:DL");
 IMPORTRANGE("1KjUVM8nkO0pfJrSed-laSzDAu8S-amPkg6cqSRYWQ2I", "Data!A1:DL");
 IMPORTRANGE("1m2MV6VY7sb3zBTuoEQZWJHTxo7moDKtYV-PYJTnES38", "Data!A1:DL");
 IMPORTRANGE("1p9dAD60KjpsOp69OBQazeg9ktzTWvtbjXLfzmMUHNLk", "Data!A1:DL");
 IMPORTRANGE("15V2rMfnbk5UEPeUa6MtaD8ljm-xbmXBM2WzZrUhDzVU", "Data!A1:DL");
 IMPORTRANGE("1DevNq8TbkDhVBkeHPegaHpxaNgvlGtPZExzueN8cpyk", "Data!A1:DL");
 IMPORTRANGE("1sXQABwo5NXiz166cruJM5Is4JWKVXzoYS3hh6IcXVj4", "Data!A1:DL");
 IMPORTRANGE("1sOBkqGVKl6xn89uRvN-TLlU1TFMJUxD_s8TgmowkLK8", "Data!A1:DL");
 IMPORTRANGE("1t8CdrQiJq1h15OIlF5yaRy1AxHyZ_mnEzfSUDEyPSM8", "Data!A1:DL")},
 "SELECT Col85,Col86,Col87,Col88,Col89,Col90,Col91,Col92,Col93,Col94,Col95,Col96,Col97,Col98,Col99,Col100,Col101,Col102,Col103,Col104,Col105,Col106,Col107,Col108,Col109,Col110,Col111,Col112,Col113,Col114,Col115 
  WHERE Col85 IS NOT NULL")

...understanding the ARRAY_LITERAL ERROR:

• until both queries/filters/formulas output something then all is good:

  

• however if one of those queries/filters/formulas doesn't have anything to output it outputs #N/A - No matches are found in QUERY/FILTER evaluation. - the issue is that #N/A is only in the 1st cell:

  

• but array expects that matrix on both sides to be same (4 columns from both queries/filters/formulas):

  

• so we wrap each query into IFERROR and in case of error we output fake row with 4 fake columns - {"","","",""} - which will trick the array to output it like:

  

your Array_Literal error is caused because one (or more than one) IMPORTRANGE formula outputs #N/A

to counter this use:

=ARRAYFORMULA(IFERROR(QUERY({
 IFERROR(IMPORTRANGE("1TRKveEBEitHDkos3WX0pPI6WUVL1gHMzdIkeB6s-dJc", "Data!A1:DL"), SUBSTITUTE(SPLIT(REPT(12, 116), 1), 2, ));
 IFERROR(IMPORTRANGE("1FONS-hdcUXnLj4UMAsixLL1CVNfL_WdxMbs68ylsyaU", "Data!A1:DL"), SUBSTITUTE(SPLIT(REPT(12, 116), 1), 2, ));
 IFERROR(IMPORTRANGE("1pE4O-rO5Fg-AmjMGQlb_m2KbeMV1ZT4ylaE5qfT_aaQ", "Data!A1:DL"), SUBSTITUTE(SPLIT(REPT(12, 116), 1), 2, ));
 IFERROR(IMPORTRANGE("1fMyrxa3rxec_8CMOsl2qbLFqht8Z2_SjvShT-WJ-ld8", "Data!A1:DL"), SUBSTITUTE(SPLIT(REPT(12, 116), 1), 2, ));
 IFERROR(IMPORTRANGE("1SC8E_0Qg9zurGwl0NsisQZO1gJyimMLXvCxRaPrqjic", "Data!A1:DL"), SUBSTITUTE(SPLIT(REPT(12, 116), 1), 2, ));
 IFERROR(IMPORTRANGE("1rtRAf7T2lY_f_R95-L9B4Mn4sn2a9oVHLour-iJfNMM", "Data!A1:DL"), SUBSTITUTE(SPLIT(REPT(12, 116), 1), 2, ));
 IFERROR(IMPORTRANGE("1UhBnBRiqPWf444Eyk26hwTEg27ErNvCE2bviRdikLCI", "Data!A1:DL"), SUBSTITUTE(SPLIT(REPT(12, 116), 1), 2, ));
 IFERROR(IMPORTRANGE("1AVr4ZMOcTBCkUkI6AaO73B0N8AeiEWyHwhyt56iJYPo", "Data!A1:DL"), SUBSTITUTE(SPLIT(REPT(12, 116), 1), 2, ));
 IFERROR(IMPORTRANGE("1n4p51IPq7m4wgjJiMTHZCKDnoR5udxIwUGY1mgJ6kNo", "Data!A1:DL"), SUBSTITUTE(SPLIT(REPT(12, 116), 1), 2, ));
 IFERROR(IMPORTRANGE("1tomsqwtJE60j-AAmt5yWFmvHunQQYjVuQmPz0tAmx-s", "Data!A1:DL"), SUBSTITUTE(SPLIT(REPT(12, 116), 1), 2, ));
 IFERROR(IMPORTRANGE("1gsyd7m867UkX20Ueha4EqSc6Uc4pSzwc-fe-gYxey5c", "Data!A1:DL"), SUBSTITUTE(SPLIT(REPT(12, 116), 1), 2, ));
 IFERROR(IMPORTRANGE("1KjUVM8nkO0pfJrSed-laSzDAu8S-amPkg6cqSRYWQ2I", "Data!A1:DL"), SUBSTITUTE(SPLIT(REPT(12, 116), 1), 2, ));
 IFERROR(IMPORTRANGE("1m2MV6VY7sb3zBTuoEQZWJHTxo7moDKtYV-PYJTnES38", "Data!A1:DL"), SUBSTITUTE(SPLIT(REPT(12, 116), 1), 2, ));
 IFERROR(IMPORTRANGE("1p9dAD60KjpsOp69OBQazeg9ktzTWvtbjXLfzmMUHNLk", "Data!A1:DL"), SUBSTITUTE(SPLIT(REPT(12, 116), 1), 2, ));
 IFERROR(IMPORTRANGE("15V2rMfnbk5UEPeUa6MtaD8ljm-xbmXBM2WzZrUhDzVU", "Data!A1:DL"), SUBSTITUTE(SPLIT(REPT(12, 116), 1), 2, ));
 IFERROR(IMPORTRANGE("1DevNq8TbkDhVBkeHPegaHpxaNgvlGtPZExzueN8cpyk", "Data!A1:DL"), SUBSTITUTE(SPLIT(REPT(12, 116), 1), 2, ));
 IFERROR(IMPORTRANGE("1sXQABwo5NXiz166cruJM5Is4JWKVXzoYS3hh6IcXVj4", "Data!A1:DL"), SUBSTITUTE(SPLIT(REPT(12, 116), 1), 2, ));
 IFERROR(IMPORTRANGE("1sOBkqGVKl6xn89uRvN-TLlU1TFMJUxD_s8TgmowkLK8", "Data!A1:DL"), SUBSTITUTE(SPLIT(REPT(12, 116), 1), 2, ));
 IFERROR(IMPORTRANGE("1t8CdrQiJq1h15OIlF5yaRy1AxHyZ_mnEzfSUDEyPSM8", "Data!A1:DL"), SUBSTITUTE(SPLIT(REPT(12, 116), 1), 2, ))},
 "SELECT Col85,Col86,Col87,Col88,Col89,Col90,Col91,Col92,Col93,Col94,Col95,Col96,Col97,Col98,Col99,Col100,Col101,Col102,Col103,Col104,Col105,Col106,Col107,Col108,Col109,Col110,Col111,Col112,Col113,Col114,Col115 
  WHERE Col85 IS NOT NULL", ))

also make sure you connected all importranges by allowing access (this needs to be done one by one)