diff --git a/server.js b/server.js
index 8d9b55a..f9064a9 100644
--- a/server.js
+++ b/server.js
@@ -820,7 +820,7 @@ app.get('/api/observacoes/contar', requireAuth, async (req, res) => {
     let pCount = 1;
 
     if (crianca) {
-      sql += ` AND EXISTS (
+      sql += ` AND jsonb_typeof(criancas) = 'array' AND EXISTS (
         SELECT 1 FROM jsonb_array_elements_text(criancas) AS c 
         WHERE LOWER(c) LIKE $${pCount}
       )`;
@@ -854,7 +854,7 @@ app.get('/api/observacoes/contar', requireAuth, async (req, res) => {
 
     if (tags) {
       const tagList = tags.split(',').map(t => t.trim().toLowerCase());
-      sql += ` AND EXISTS (
+      sql += ` AND jsonb_typeof(tags) = 'array' AND EXISTS (
         SELECT 1 FROM jsonb_array_elements_text(tags) AS t 
         WHERE LOWER(t) = ANY($${pCount})
       )`;
@@ -891,7 +891,7 @@ app.post('/api/modelos/gerar-relatorio', requireAuth, async (req, res) => {
     let pCount = 1;
 
     if (crianca) {
-      sql += ` AND EXISTS (
+      sql += ` AND jsonb_typeof(criancas) = 'array' AND EXISTS (
         SELECT 1 FROM jsonb_array_elements_text(criancas) AS c 
         WHERE LOWER(c) LIKE $${pCount}
       )`;
@@ -925,7 +925,7 @@ app.post('/api/modelos/gerar-relatorio', requireAuth, async (req, res) => {
 
     if (tags) {
       const tagList = Array.isArray(tags) ? tags : [tags];
-      sql += ` AND EXISTS (
+      sql += ` AND jsonb_typeof(tags) = 'array' AND EXISTS (
         SELECT 1 FROM jsonb_array_elements_text(tags) AS t 
         WHERE LOWER(t) = ANY($${pCount})
       )`;
@@ -1106,7 +1106,7 @@ app.get('/api/observacoes/buscar', requireAuth, async (req, res) => {
     let pCount = 1;
 
     if (crianca) {
-      sql += ` AND EXISTS (
+      sql += ` AND jsonb_typeof(criancas) = 'array' AND EXISTS (
         SELECT 1 FROM jsonb_array_elements_text(criancas) AS c 
         WHERE LOWER(c) LIKE $${pCount}
       )`;
@@ -1122,7 +1122,7 @@ app.get('/api/observacoes/buscar', requireAuth, async (req, res) => {
 
     if (tags) {
       const tagList = tags.split(',').map(t => t.trim().toLowerCase());
-      sql += ` AND EXISTS (
+      sql += ` AND jsonb_typeof(tags) = 'array' AND EXISTS (
         SELECT 1 FROM jsonb_array_elements_text(tags) AS t 
         WHERE LOWER(t) = ANY($${pCount})
       )`;
@@ -1154,7 +1154,7 @@ app.get('/api/observacoes/resumo', requireAuth, async (req, res) => {
     let sql = `
       SELECT date, time, report, tags, turma, SUBSTRING(report FROM 1 FOR 120) || '...' as preview 
       FROM escola.observacoes 
-      WHERE EXISTS (
+      WHERE jsonb_typeof(criancas) = 'array' AND EXISTS (
         SELECT 1 FROM jsonb_array_elements_text(criancas) AS c 
         WHERE LOWER(c) LIKE $1
       )